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INSTALL
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@ -1,4 +1,3 @@
Installing PHP
_________________________________________________________________
@ -17,6 +16,7 @@ Installing PHP
OpenBSD installation notes
Solaris specific installation tips
Gentoo installation notes
Debian GNU/Linux installation notes
3. Installation on Mac OS X
@ -43,6 +43,8 @@ Installing PHP
The configuration file
How to change configuration settings
7. Installation FAQ
_________________________________________________________________
Preface
@ -164,7 +166,7 @@ Apache 1.3.x on Unix systems
your files.
Example 2-1. Installation Instructions (Apache Shared Module Version)
for PHP
for PHP
1. gunzip apache_xxx.tar.gz
2. tar -xvf apache_xxx.tar
3. gunzip php-xxx.tar.gz
@ -248,14 +250,14 @@ Apache 1.3.x on Unix systems
Alternatively, to install PHP as a static object:
Example 2-2. Installation Instructions (Static Module Installation for
Apache) for PHP
Apache) for PHP
1. gunzip -c apache_1.3.x.tar.gz | tar xf -
2. cd apache_1.3.x
3. ./configure
4. cd ..
5. gunzip -c php-4.x.y.tar.gz | tar xf -
6. cd php-4.x.y
5. gunzip -c php-5.x.y.tar.gz | tar xf -
6. cd php-5.x.y
7. ./configure --with-mysql --with-apache=../apache_1.3.x
8. make
9. make install
@ -269,15 +271,17 @@ Apache 1.3.x on Unix systems
12. make
(you should now have an httpd binary which you can copy to your Apache bin
dir if
is is your first install then you need to "make install" as well)
it is your first install then you need to "make install" as well)
13. cd ../php-4.x.y
13. cd ../php-5.x.y
14. cp php.ini-dist /usr/local/lib/php.ini
15. You can edit /usr/local/lib/php.ini file to set PHP options.
Edit your httpd.conf or srm.conf file and add:
AddType application/x-httpd-php .php
Note: Replace php-5 by php-4 and php5 by php4 in PHP 4.
Depending on your Apache install and Unix variant, there are many
possible ways to stop and restart the server. Below are some typical
lines used in restarting the server, for different apache/unix
@ -309,13 +313,13 @@ stop and start:
./configure --with-apxs --with-pgsql
This will create a libphp5.so shared library that is loaded into
Apache using a LoadModule line in Apache's httpd.conf file. The
PostgreSQL support is embedded into this libphp5.so library.
This will create a libphp5.so (or libphp4.so in PHP 4) shared library
that is loaded into Apache using a LoadModule line in Apache's
httpd.conf file. The PostgreSQL support is embedded into this library.
./configure --with-apxs --with-pgsql=shared
This will create a libphp5.so shared library for Apache, but it will
This will create a libphp4.so shared library for Apache, but it will
also create a pgsql.so shared library that is loaded into PHP either
by using the extension directive in php.ini file or by loading it
explicitly in a script using the dl() function.
@ -327,9 +331,9 @@ stop and start:
in the Apache source tree. Then you compile Apache using
--activate-module=src/modules/php5/libphp5.a and the Apache build
system will create libphp5.a and link it statically into the httpd
binary. The PostgreSQL support is included directly into this httpd
binary, so the final result here is a single httpd binary that
includes all of Apache and all of PHP.
binary (replace php5 by php4 in PHP 4). The PostgreSQL support is
included directly into this httpd binary, so the final result here is
a single httpd binary that includes all of Apache and all of PHP.
./configure --with-apache=/path/to/apache_source --with-pgsql=shared
@ -403,7 +407,7 @@ Apache 2.0 on Unix systems
files.
Example 2-4. Installation Instructions (Apache 2 Shared Module
Version)
Version)
1. gzip -d httpd-2_0_NN.tar.gz
2. tar xvf httpd-2_0_NN.tar
3. gunzip php-NN.tar.gz
@ -461,11 +465,11 @@ Apache 2.0 on Unix systems
For PHP 4:
LoadModule php4_module libexec/libphp4.so
LoadModule php4_module modules/libphp4.so
For PHP 5:
LoadModule php5_module libexec/libphp5.so
LoadModule php5_module modules/libphp5.so
15. Tell Apache to parse certain extensions as PHP. For example,
let's have Apache parse the .php extension as PHP. You could
@ -1097,6 +1101,121 @@ Common Problems
"Apache PHP".
_________________________________________________________________
Debian GNU/Linux installation notes
This section contains notes and hints specific to installing PHP on
Debian GNU/Linux.
_________________________________________________________________
Using APT
While you can just download the PHP source and compile it yourself,
using Debian's packaging system is the simplest and cleanest method of
installing PHP. If you are not familiar with building software on
Linux, this is the way to go.
The first decision you need to make is whether you want to install
Apache 1.3.x or Apache 2.x. The corresponding PHP packages are
respectively named libapache-mod-php* and libapache2-mod-php*. The
steps given below will use Apache 1.3.x. Please note that, as of this
writing, there is no official Debian packages of PHP 5. Then the steps
given below will install PHP 4.
PHP is available in Debian as CGI or CLI flavour too, named
respectively php4-cgi and php4-cli. If you need them, you'll just have
to reproduce the following steps with the good package names. Another
special package you'd want to install is php4-pear. It contains a
minimal PEAR installation and the pear commandline utility.
If you need more recent packages of PHP than the Debian's stable ones
or if some PHP modules lacks the Debian official repository, perhaps
you should take a look at http://www.apt-get.org/. One of the results
found should be Dotdeb. This unofficial repository is maintained by
Guillaume Plessis and contains Debian packages of the most recent
versions of PHP 4 and PHP 5. To use it, just add the to following two
lines to your /etc/apt/sources.lists and run apt-get update :
Example 2-10. The two Dotdeb related lines
deb http://packages.dotdeb.org stable all
deb-src http://packages.dotdeb.org stable all
The last thing to consider is whether your list of packages is up to
date. If you have not updated it recently, you need to run apt-get
update before anything else. This way, you will be using the most
recent stable version of the Apache and PHP packages.
Now that everything is in place, you can use the following example to
install Apache and PHP:
Example 2-11. Debian Install Example with Apache 1.3
# apt-get install libapache-mod-php4
APT will automatically install the PHP 4 module for Apache 1.3, and
all its dependencies and then activate it. If you're not asked to
restart Apache during the install process, you'll have to do it
manually :
Example 2-12. Stopping and starting Apache once PHP 4 is installed
# /etc/init.d/apache stop
# /etc/init.d/apache start
_________________________________________________________________
Better control on configuration
In the last section, PHP was installed with only core modules. This
may not be what you want and you will soon discover that you need more
activated modules, like MySQL, cURL, GD, etc.
When you compile PHP from source yourself, you need to activate
modules via the configure command. With APT, you just have to install
additional packages. They're all named 'php4-*' (or 'php5-*' if you
installed PHP 5 from a third party repository).
Example 2-13. Getting the list of PHP additional packages
# dpkg -l 'php4-*'
As you can see from the last output, there's a lot of PHP modules that
you can install (excluding the php4-cgi, php4-cli or php4-pear special
packages). Look at them closely and choose what you need. If you
choose a module and you do not have the proper libraries, APT will
automatically install all the dependencies for you.
If you choose to add the MySQL, cURL and GD support to PHP the command
will look something like this:
Example 2-14. Install PHP with MySQL, cURL and GD
# apt-get install php4-mysql php4-curl php4-gd
APT will automatically add the appropriate lines to your different
php.ini (/etc/php4/apache/php.ini, /etc/php4/cgi/php.ini, etc).
Example 2-15. These lines activate MySQL, cURL and GD into PHP
extension=mysql.so
extension=curl.so
extension=gd.so
You'll only have to stop/start Apache as previously to activate the
modules.
_________________________________________________________________
Common Problems
* If you see the PHP source instead of the result the script should
produce, APT has probably not included /etc/apache/conf.d/php4 in
your Apache 1.3 configuration. Please ensure that the following
line is present in your /etc/apache/httpd.conf file then
stop/start Apache:
Example 2-16. This line activates PHP 4 into Apache
# Include /etc/apache/conf.d/
* If you installed an additional module and if its functions are not
available in your scripts, please ensure that the appropriate line
is present in your php.ini, as seen before. APT may fail during
the installation of the additional module, due to a confusing
debconf configuration.
_________________________________________________________________
Chapter 3. Installation on Mac OS X
This section contains notes and hints specific to installing PHP on
@ -1119,7 +1238,7 @@ Using Packages
Compiling for OS X Server
Mac OS X Server install.
Mac OS X Server install.
1. Get the latest distributions of Apache and PHP.
2. Untar them, and run the configure program on Apache like so.
@ -1221,24 +1340,24 @@ Chapter 4. Installation of PECL extensions
Introduction to PECL Installations
PHP extensions may be installed in a variety of ways. PECL is a
repository of PHP extensions living within the PEAR structure, and the
following demonstrates how to install these extensions.
PECL is a repository of PHP extensions that are made available to you
via the PEAR packaging system. This section of the manual is intended
to demonstrate how to obtain and install PECL extensions.
These instructions assume /your/phpsrcdir/ is the path to the PHP
source, and extname is the name of the PECL extension. Adjust
accordingly. These instructions also assume a familiarity with the
pear command.
source distribution, and that extname is the name of the PECL
extension. Adjust accordingly. These instructions also assume a
familiarity with the pear command.
Shared extensions may be installed by including them inside of php.ini
using the extension PHP directive. See also the extensions_dir
directive, and dl(). The installation methods described below do not
automatically configure PHP to include these extensions, this step
must be done manually.
To be useful, a shared extension must be built, installed, and loaded.
The methods described below provide you with various instructions on
how to build and install the extensions, but they do not automatically
load them. Extensions can be loaded by adding an extension directive.
To this php.ini file, or through the use of the dl() function.
When building PHP modules, it's important to have the appropriate
versions of the required tools (autoconf, automake, libtool, etc.) See
the Anonymous CVS Instructions for details on the required tools, and
When building PHP modules, it's important to have known-good versions
of the required tools (autoconf, automake, libtool, etc.) See the
Anonymous CVS Instructions for details on the required tools, and
required versions.
_________________________________________________________________
@ -1247,16 +1366,19 @@ Downloading PECL extensions
There are several options for downloading PECL extensions, such as:
* http://pecl.php.net
Listed here is information like the ChangeLog, release
information, requirements, revisions, etc. Although not every PECL
extension has a webpage, most do.
The PECL web site contains information about the different
extensions that are offered by the PHP Development Team. The
information available here includes: ChangeLog, release notes,
requirements and other similar details.
* pear download extname
The pear command may also be used to download source files.
PECL extensions that have releases listed on the PECL web site are
available for download and installation using the pear command.
Specific revisions may also be specified.
* CVS
All PECL files reside in CVS. A web-based view may be seen at
http://cvs.php.net/pecl/. To download straight from CVS, consider
the following where phpfi is the password for user cvsread:
Most PECL extensions also reside in CVS. A web-based view may be
seen at http://cvs.php.net/pecl/. To download straight from CVS,
the following sequence of commands may be used. Note that phpfi is
the password for user cvsread:
$ cvs -d:pserver:cvsread@cvs.php.net:/repository login
$ cvs -d:pserver:cvsread@cvs.php.net:/repository co pecl/extname
@ -1270,9 +1392,10 @@ $ cvs -d:pserver:cvsread@cvs.php.net:/repository co pecl/extname
PECL for Windows users
Like with any other PHP extension DLL, to install move the PECL
extension DLLs into the extension_dir folder and include them within
php.ini. For example:
As with any other PHP extension DLL, installation is as simple as
copying the PECL extension DLLs into the extension_dir folder and
loading them from php.ini. For example, add the following line to your
php.ini:
extension=php_extname.dll
@ -1286,67 +1409,76 @@ Compiling shared PECL extensions with PEAR
$ pear install extname
That will download the source for extname, and compile it on the
system. This results in an extname.so file that may then be included
in php.ini
This will download the source for extname, compile, and install
extname.so into your extension_dir. extname.so may then be loaded via
php.ini
In case the systems preferred_state is set higher than an available
extname version, like it's set to stable and the extension is still in
beta, either alter the preferred_state via pear config-set or specify
a specific version of the PECL extension. For example:
By default, the pear command will not install packages that are marked
with the alpha or beta state. If no stable packages are available, you
may install a beta package using the following command:
$ pear install extname-0.1.1
$ pear install extname-beta
Regardless, pear will copy this extname.so into the extensions
directory. Adjust php.ini accordingly.
You may also install a specific version using this variant:
$ pear install extname-0.1
_________________________________________________________________
Compiling shared PECL extensions with phpize
If using pear is not an option, like for building shared PECL
extensions from CVS, or for unreleased PECL packages, then creating a
shared extension may also be done by manually using the phpize
command. The pear command essentially does this but it may also be
done manually. Assuming the source file is named extname.tgz, and that
it was downloaded into the current directory, consider the following:
Sometimes, using the pear installer is not an option. This could be
because you're behind a firewall, or it could be because the extension
you want to install is not available as a PEAR compatible package,
such as unreleased extensions from CVS. If you need to build such an
extension, you can use the lower-level build tools to perform the
build manually.
The phpize command is used to prepare the build environment for a PHP
extension. In the following sample, the sources for an extension are
in a directory named extname:
$ pear download extname
$ gzip -d < extname.tgz | tar -xvf -
$ cd extname
$ phpize
$ ./configure && make
$ ./configure
$ make
# make install
Upon success, this will create extname.so and put it into the modules/
and/or .libs/ directory within the extname/ source. Move this shared
extension (extname.so) into the PHP extensions directory, and adjust
php.ini accordingly.
A successful install will have created extname.so and put it into the
PHP extensions directory. You'll need to and adjust php.ini and add an
extension=extname.so line before you can use the extension.
_________________________________________________________________
Compiling PECL extensions statically into PHP
To statically include the extension within the PHP build, put the
extensions source into the ext/ directory found in the PHP source. For
example:
You might find that you need to build a PECL extension statically into
your PHP binary. To do this, you'll need to place the extension source
under the php-src/ext/ directory and tell the PHP build system to
regenerate its configure script.
$ cd /your/phpsrcdir/ext
$ pear download extname
$ gzip -d < extname.tgz | tar -xvf -
$ mv extname-x.x.x extname
$ rm package.xml
This will result in the following directory:
/your/phpsrcdir/ext/extname
From here, build PHP as normal:
From here, force PHP to rebuild the configure script, and then build
PHP as normal:
$ cd /your/phpsrcdir
$ ./buildconf
$ rm configure
$ ./buildconf --force
$ ./configure --help
$ ./configure --with-extname --enable-someotherext --with-foobar
$ make
$ make install
Note: To run the 'buildconf' script you need autoconf 2.13 and
automake 1.4+ (newer versions of autoconf may work, but are not
supported).
Whether --enable-extname or --with-extname is used depends on the
extension. Typically an extension that does not require external
libraries uses --enable. To be sure, run the following after
@ -1403,14 +1535,23 @@ The configuration file
versions of PHP, this happens only once when the web server is
started. For the CGI and CLI version, it happens on every invocation.
The default location of php.ini is a compile time option (see the FAQ
entry), but can be changed for the CGI and CLI version with the -c
command line switch, see the chapter about using PHP from the command
line. You can also use the environment variable PHPRC for an
additional path to search for a php.ini file.
php.ini is searched in these locations (in order):
* SAPI module specific location (PHPIniDir directive in Apache 2, -c
command line option in CGI and CLI, php_ini parameter in NSAPI,
PHP_INI_PATH environment variable in THTTPD)
* HKEY_LOCAL_MACHINE\SOFTWARE\PHP\IniFilePath (Windows Registry
location)
* The PHPRC environment variable
* Current working directory (for CLI)
* The web server's directory (for SAPI modules), or directory of PHP
(otherwise in Windows)
* Windows directory (C:\windows or C:\winnt) (for Windows), or
--with-config-file-path compile time option
If php-SAPI.ini exists (where SAPI is used SAPI, so the filename is
e.g. php-cli.ini or php-apache.ini), it's used instead of php.ini.
SAPI name can be determined by php_sapi_name().
Note: The Apache web server changes the directory to root at
startup causing PHP to attempt to read php.ini from the root
@ -1418,11 +1559,11 @@ The configuration file
The php.ini directives handled by extensions are documented
respectively on the pages of the extensions themselves. The list of
the core directives is available in the appendix. Probably not all the
PHP directives are documented in the manual though. For a completel
list of directives available in your PHP version, please read your
well commented php.ini file. Alternatively, you may find the the
latest php.ini from CVS helpful too.
the core directives is available in the appendix. Probably not all PHP
directives are documented in the manual though. For a complete list of
directives available in your PHP version, please read your well
commented php.ini file. Alternatively, you may find the the latest
php.ini from CVS helpful too.
Example 6-1. php.ini example
; any text on a line after an unquoted semicolon (;) is ignored
@ -1438,6 +1579,10 @@ include_path = ".:/usr/local/lib/php"
; backslashes are treated the same as any other character
include_path = ".;c:\php\lib"
Since PHP 5.1.0, it is possible to refer to existing .ini variables
from within .ini files. Example: open_basedir = ${open_basedir}
":/new/dir".
_________________________________________________________________
How to change configuration settings
@ -1533,3 +1678,420 @@ Other interfaces to PHP
function, and review the resulting page. You can also access the
values of individual configuration directives at runtime using
ini_get() or get_cfg_var().
_________________________________________________________________
Chapter 7. Installation FAQ
This section holds common questions about the way to install PHP. PHP
is available for almost any OS (except maybe for MacOS before OSX),
and almost any web server.
To install PHP, follow the instructions in the INSTALL file located in
the distribution. Windows users should also read the install.txt file.
There are also some helpful hints for Windows users here.
1. Why shouldn't I use Apache2 with a threaded MPM in a production
environment?
2. Unix/Windows: Where should my php.ini file be located?
3. Unix: I installed PHP, but every time I load a document, I get the
message 'Document Contains No Data'! What's going on here?
4. Unix: I installed PHP using RPMS, but Apache isn't processing the
PHP pages! What's going on here?
5. Unix: I installed PHP 3 using RPMS, but it doesn't compile with the
database support I need! What's going on here?
6. Unix: I patched Apache with the FrontPage extensions patch, and
suddenly PHP stopped working. Is PHP incompatible with the
Apache FrontPage extensions?
7. Unix/Windows: I have installed PHP, but when I try to access a PHP
script file via my browser, I get a blank screen.
8. Unix/Windows: I have installed PHP, but when try to access a PHP
script file via my browser, I get a server 500 error.
9. Some operating systems: I have installed PHP without errors, but
when I try to start apache I get undefined symbol errors:
[mybox:user /src/php4] root# apachectl configtest
apachectl: /usr/local/apache/bin/httpd Undefined symbols:
_compress
_uncompress
10. Windows: I have installed PHP, but when I to access a PHP script
file via my browser, I get the error:
cgi error:
The specified CGI application misbehaved by not
returning a complete set of HTTP headers.
The headers it did return are:
11. Windows: I've followed all the instructions, but still can't get
PHP and IIS to work together!
12. When running PHP as CGI with IIS, PWS, OmniHTTPD or Xitami, I get
the following error: Security Alert! PHP CGI cannot be accessed
directly..
13. How do I know if my php.ini is being found and read? It seems like
it isn't as my changes aren't being implemented.
14. How do I add my PHP directory to the PATH on Windows?
15. How do I make the php.ini file available to PHP on windows?
16. Is it possible to use Apache content negotiation (MultiViews
option) with PHP?
17. Is PHP limited to process GET and POST request methods only?
1. Why shouldn't I use Apache2 with a threaded MPM in a production
environment?
PHP is glue. It is the glue used to build cool web applications by
sticking dozens of 3rd-party libraries together and making it all
appear as one coherent entity through an intuitive and easy to learn
language interface. The flexibility and power of PHP relies on the
stability and robustness of the underlying platform. It needs a
working OS, a working web server and working 3rd-party libraries to
glue together. When any of these stop working PHP needs ways to
identify the problems and fix them quickly. When you make the
underlying framework more complex by not having completely separate
execution threads, completely separate memory segments and a strong
sandbox for each request to play in, feet of clay are introduced into
PHP's system.
If you feel you have to use a threaded MPM, look at a FastCGI
configuration where PHP is running in its own memory space.
And finally, this warning against using a threaded MPM is not as
strong for Windows systems because most libraries on that platform
tend to be threadsafe.
2. Unix/Windows: Where should my php.ini file be located?
By default on Unix it should be in /usr/local/lib which is
<install-path>/lib. Most people will want to change this at
compile-time with the --with-config-file-path flag. You would, for
example, set it with something like:
--with-config-file-path=/etc
And then you would copy php.ini-dist from the distribution to
/etc/php.ini and edit it to make any local changes you want.
--with-config-file-scan-dir=PATH
On Windows the default path for the php.ini file is the Windows
directory. If you're using the Apache webserver, php.ini is first
searched in the Apaches install directory, e.g. c:\program
files\apache group\apache. This way you can have different php.ini
files for different versions of Apache on the same machine.
See also the chapter about the configuration file.
3. Unix: I installed PHP, but every time I load a document, I get the
message 'Document Contains No Data'! What's going on here?
This probably means that PHP is having some sort of problem and is
core-dumping. Look in your server error log to see if this is the
case, and then try to reproduce the problem with a small test case. If
you know how to use 'gdb', it is very helpful when you can provide a
backtrace with your bug report to help the developers pinpoint the
problem. If you are using PHP as an Apache module try something like:
* Stop your httpd processes
* gdb httpd
* Stop your httpd processes
* > run -X -f /path/to/httpd.conf
* Then fetch the URL causing the problem with your browser
* > run -X -f /path/to/httpd.conf
* If you are getting a core dump, gdb should inform you of this now
* type: bt
* You should include your backtrace in your bug report. This should
be submitted to http://bugs.php.net/
If your script uses the regular expression functions (ereg() and
friends), you should make sure that you compiled PHP and Apache with
the same regular expression package. This should happen automatically
with PHP and Apache 1.3.x
4. Unix: I installed PHP using RPMS, but Apache isn't processing the
PHP pages! What's going on here?
Assuming you installed both Apache and PHP from RPM packages, you need
to uncomment or add some or all of the following lines in your
httpd.conf file:
# Extra Modules
AddModule mod_php.c
AddModule mod_php3.c
AddModule mod_perl.c
# Extra Modules
LoadModule php_module modules/mod_php.so
LoadModule php3_module modules/libphp3.so # for PHP 3
LoadModule php4_module modules/libphp4.so # for PHP 4
LoadModule perl_module modules/libperl.so
And add:
AddType application/x-httpd-php3 .php3 # for PHP 3
AddType application/x-httpd-php .php # for PHP 4
... to the global properties, or to the properties of the
VirtualDomain you want to have PHP support added to.
5. Unix: I installed PHP 3 using RPMS, but it doesn't compile with the
database support I need! What's going on here?
Due to the way PHP 3 built, it is not easy to build a complete
flexible PHP RPM. This issue is addressed in PHP 4. For PHP 3, we
currently suggest you use the mechanism described in the
INSTALL.REDHAT file in the PHP distribution. If you insist on using an
RPM version of PHP 3, read on...
The RPM packagers are setting up the RPMS to install without database
support to simplify installations and because RPMS use /usr/ instead
of the standard /usr/local/ directory for files. You need to tell the
RPM spec file which databases to support and the location of the
top-level of your database server.
This example will explain the process of adding support for the
popular MySQL database server, using the mod installation for Apache.
Of course all of this information can be adjusted for any database
server that PHP supports. We will assume you installed MySQL and
Apache completely with RPMS for this example as well.
* First remove mod_php3 :
rpm -e mod_php3
* Then get the source rpm and INSTALL it, NOT --rebuild
rpm -Uvh mod_php3-3.0.5-2.src.rpm
* Then edit the /usr/src/redhat/SPECS/mod_php3.spec file
In the %build section add the database support you want, and the
path.
For MySQL you would add --with-mysql=/usr The %build section will
look something like this:
./configure --prefix=/usr \
--with-apxs=/usr/sbin/apxs \
--with-config-file-path=/usr/lib \
--enable-debug=no \
--enable-safe-mode \
--with-exec-dir=/usr/bin \
--with-mysql=/usr \
--with-system-regex
* Once this modification is made then build the binary rpm as
follows:
rpm -bb /usr/src/redhat/SPECS/mod_php3.spec
* Then install the rpm
rpm -ivh /usr/src/redhat/RPMS/i386/mod_php3-3.0.5-2.i386.rpm
Make sure you restart Apache, and you now have PHP 3 with MySQL
support using RPM's. Note that it is probably much easier to just
build from the distribution tarball of PHP 3 and follow the
instructions in INSTALL.REDHAT found in that distribution.
6. Unix: I patched Apache with the FrontPage extensions patch, and
suddenly PHP stopped working. Is PHP incompatible with the Apache
FrontPage extensions?
No, PHP works fine with the FrontPage extensions. The problem is that
the FrontPage patch modifies several Apache structures, that PHP
relies on. Recompiling PHP (using 'make clean ; make') after the FP
patch is applied would solve the problem.
7. Unix/Windows: I have installed PHP, but when I try to access a PHP
script file via my browser, I get a blank screen.
Do a 'view source' in the web browser and you will probably find that
you can see the source code of your PHP script. This means that the
web server did not send the script to PHP for interpretation.
Something is wrong with the server configuration - double check the
server configuration against the PHP installation instructions.
8. Unix/Windows: I have installed PHP, but when try to access a PHP
script file via my browser, I get a server 500 error.
Something went wrong when the server tried to run PHP. To get to see a
sensible error message, from the command line, change to the directory
containing the PHP executable (php.exe on Windows) and run php -i. If
PHP has any problems running, then a suitable error message will be
displayed which will give you a clue as to what needs to be done next.
If you get a screen full of HTML codes (the output of the phpinfo()
function) then PHP is working, and your problem may be related to your
server configuration which you should double check.
9. Some operating systems: I have installed PHP without errors, but
when I try to start apache I get undefined symbol errors:
[mybox:user /src/php4] root# apachectl configtest
apachectl: /usr/local/apache/bin/httpd Undefined symbols:
_compress
_uncompress
This has actually nothing to do with PHP, but with the MySQL client
libraries. Some need --with-zlib, others do not. This is also covered
in the MySQL FAQ.
10. Windows: I have installed PHP, but when I to access a PHP script
file via my browser, I get the error:
cgi error:
The specified CGI application misbehaved by not
returning a complete set of HTTP headers.
The headers it did return are:
This error message means that PHP failed to output anything at all. To
get to see a sensible error message, from the command line, change to
the directory containing the PHP executable (php.exe on Windows) and
run php -i. If PHP has any problems running, then a suitable error
message will be displayed which will give you a clue as to what needs
to be done next. If you get a screen full of HTML codes (the output of
the phpinfo() function) then PHP is working.
Once PHP is working at the command line, try accessing the script via
the browser again. If it still fails then it could be one of the
following:
* File permissions on your PHP script, php.exe, php4ts.dll, php.ini
or any PHP extensions you are trying to load are such that the
anonymous internet user ISUR_<machinename> cannot access them.
* The script file does not exist (or possibly isn't where you think
it is relative to your web root directory). Note that for IIS you
can trap this error by ticking the 'check file exists' box when
setting up the script mappings in the Internet Services Manager.
If a script file does not exist then the server will return a 404
error instead. There is also the additional benefit that IIS will
do any authentication required for you based on the NTLanMan
permissions on your script file.
11. Windows: I've followed all the instructions, but still can't get
PHP and IIS to work together!
Make sure any user who needs to run a PHP script has the rights to run
php.exe! IIS uses an anonymous user which is added at the time IIS is
installed. This user needs rights to php.exe. Also, any authenticated
user will also need rights to execute php.exe. And for IIS4 you need
to tell it that PHP is a script engine. Also, you will want to read
this faq.
12. When running PHP as CGI with IIS, PWS, OmniHTTPD or Xitami, I get
the following error: Security Alert! PHP CGI cannot be accessed
directly..
You must set the cgi.force_redirect directive to 0. It defaults to 1
so be sure the directive isn't commented out (with a ;). Like all
directives, this is set in php.ini
Because the default is 1, it's critical that you're 100% sure that the
correct php.ini file is being read. Read this faq for details.
13. How do I know if my php.ini is being found and read? It seems like
it isn't as my changes aren't being implemented.
To be sure your php.ini is being read by PHP, make a call to phpinfo()
and near the top will be a listing called Configuration File
(php.ini). This will tell you where PHP is looking for php.ini and
whether or not it's being read. If just a directory PATH exists than
it's not being read and you should put your php.ini in that directory.
If php.ini is included within the PATH than it is being read.
If php.ini is being read and you're running PHP as a module, then be
sure to restart your web server after making changes to php.ini
14. How do I add my PHP directory to the PATH on Windows?
On Windows NT, 2000, XP and 2003:
* Go to Control Panel and open the System icon (Start -> Settings ->
Control Panel -> System, or just Start -> Control Panel -> System
for Windows XP/2003)
* Go to the Advanced tab
* Click on the 'Environment Variables' button
* Look into the 'System Variables' pane
* Find the Path entry (you may need to scroll to find it)
* Double click on the Path entry
* Enter your PHP directory ant the end, including ';' before (e.g.
;C:\php)
* Press OK and restart your computer
On Windows 98/Me you need to edit the autoexec.bat file:
* Open the Notepad (Start -> Run and enter notepad)
* Open the C:\autoexec.bat file
* Locate the line with PATH=C:\WINDOWS;C:\WINDOWS\COMMAND;..... and
add: ;C:\php to the end of the line
* Save the file and restart your computer
Note: Be sure to reboot after following the steps above to ensure
that the PATH changes are applied.
The PHP manual used to promote the copying of files into the Windows
system directory, this is because this directory (C:\Windows,
C:\WINNT, etc.) is by default in the systems PATH. Copying files into
the Windows system directory has long since been deprecated and may
cause problems.
15. How do I make the php.ini file available to PHP on windows?
There are several ways of doing this. If you are using Apache, read
their installation specific instructions (Apache 1, Apache 2),
otherwise you must set the PHPRC environment variable:
On Windows NT, 2000, XP and 2003:
* Go to Control Panel and open the System icon (Start -> Settings ->
Control Panel -> System, or just Start -> Control Panel -> System
for Windows XP/2003)
* Go to the Advanced tab
* Click on the 'Environment Variables' button
* Look into the 'System variables' pane
* Click on 'New' and enter 'PHPRC' as the variable name and the
directory where php.ini is located as the variable value (e.g.
C:\php)
* Press OK and restart your computer
On Windows 98/Me you need to edit the autoexec.bat file:
* Open the Notepad (Start -> Run and enter notepad)
* Open the C:\autoexec.bat file
* Add a new line to the end of the file: set PHPRC=C:\php (replace
C:\php with the directory where php.ini is located). Please note
that the path cannot contain spaces. For instance, if you have
installed PHP in C:\Program Files\PHP, you would enter
C:\PROGRA~1\PHP instead.
* Save the file and restart your computer
16. Is it possible to use Apache content negotiation (MultiViews
option) with PHP?
If links to PHP files include extension, everything works perfect.
This FAQ is only for the case when links to PHP files don't include
extension and you want to use content negotiation to choose PHP files
from URL with no extension. In this case, replace the line AddType
application/x-httpd-php .php with:
# PHP 4
AddHandler php-script php
AddType text/html php
# PHP 5
AddHandler php5-script php
AddType text/html php
This solution doesn't work for Apache 1 as PHP module doesn't catch
php-script.
17. Is PHP limited to process GET and POST request methods only?
No, it is possible to handle any request method, e.g. CONNECT. Proper
response status can be sent with header(). If only GET and POST
methods should be handled, it can be achieved with this Apache
configuration:
<LimitExcept GET POST>
Deny from all
</LimitExcept>

653
win32/install.txt
View File

@ -1,4 +1,3 @@
Installing PHP
_________________________________________________________________
@ -38,6 +37,8 @@ Installing PHP
The configuration file
How to change configuration settings
6. Installation FAQ
_________________________________________________________________
Preface
@ -238,8 +239,6 @@ c:\php
|
+--sapi -- SAPI (server module support) DLLs
| |
| |-php4activescript.dll
| |
| |-php4apache.dll
| |
| |-php4apache2.dll
@ -376,7 +375,8 @@ c:\php
better maintenance, we advise you to follow the last option, add
C:\php to the PATH, because it will be simpler to upgrade PHP in the
future. Read more about how to add your PHP directory to PATH in the
corresponding FAQ entry.
corresponding FAQ entry (and then don't forget to restart the computer
- logoff isn't enough).
The next step is to set up a valid configuration file for PHP,
php.ini. There are two ini files distributed in the zip file,
@ -390,15 +390,8 @@ c:\php
would like to achieve the best security, then this is the way for you,
although PHP works fine with these default ini files. Copy your chosen
ini-file to a directory that PHP is able to find and rename it to
php.ini. PHP searches for php.ini in the following locations (in
order):
* PHPIniDir directive (Apache 2 module only)
* HKEY_LOCAL_MACHINE\SOFTWARE\PHP\IniFilePath
* The PHPRC environment variable
* Directory of PHP (for CLI), or the web server's directory (for
SAPI modules)
* Windows directory (C:\windows or C:\winnt)
php.ini. PHP searches for php.ini in the locations described in the
Section called The configuration file in Chapter 5 section.
If you are running Apache 2, the simpler option is to use the
PHPIniDir directive (read the installation on Apache 2 page),
@ -471,6 +464,10 @@ ActiveScript
Save and double-click on the file. If you receive a little window
saying "Hello World!" you're done.
Note: In PHP 4, the engine was named 'ActivePHP', so if you are
using PHP 4, you should replace 'PHPScript' with 'ActivePHP' in the
above example.
Note: ActiveScript doesn't use the default php.ini file. Instead,
it will look only in the same directory as the .exe that caused it
to load. You should create php-activescript.ini and place it in
@ -496,9 +493,9 @@ General considerations for all installations of PHP with IIS
Windows.
* CGI users must set the cgi.force_redirect PHP directive to 0
inside php.ini. Read the faq on cgi.force_redirect for important
details. Also, CGI users should set the cgi.redirect_status_env
directive to ENV_VAR_NAME. Be sure these directives aren't
commented out inside php.ini.
details. Also, CGI users may want to set the
cgi.redirect_status_env directive. When using directives, be sure
these directives aren't commented out inside php.ini.
* The PHP 4 CGI is named php.exe while in PHP 5 it's php-cgi.exe. In
PHP 5, php.exe is the CLI, and not the CGI.
* Modify the Windows PATH environment variable to include the PHP
@ -506,6 +503,9 @@ General considerations for all installations of PHP with IIS
php.ini can all remain in the PHP directory without cluttering up
the Windows system directory. For more details, see the FAQ on
Setting the PATH.
* The IIS user (usually IUSR_MACHINENAME) needs permission to read
various files and directories, such as php.ini, docroot, and the
session tmp directory.
* Be sure the extension_dir and doc_root PHP directives are
appropriately set in php.ini. These directives depend on the
system that PHP is being installed on. In PHP 4, the extension_dir
@ -630,8 +630,8 @@ Windows and PWS/IIS 3
* Type in the extension you wish to use for your php scripts. For
example .php
* Double click on the new string value and enter the path to php.exe
in the value data field. ex: C:\php\php.exe for PHP 4, or
C:\php\php-cgi.exe for PHP 5.
in the value data field. ex: C:\php\php.exe "%s" %s for PHP 4, or
C:\php\php-cgi.exe "%s" %s for PHP 5.
* Repeat these steps for each extension you wish to associate with
PHP scripts.
@ -711,14 +711,15 @@ Installing as an Apache module
For PHP 4:
# Add to the end of the LoadModule section
LoadModule php4_module "c:/php/php4apache.dll"
# Don't forget to copy this file from the sapi directory!
LoadModule php4_module "C:/php/php4apache.dll"
# Add to the end of the AddModule section
AddModule mod_php4.c
For PHP 5:
# Add to the end of the LoadModule section
LoadModule php5_module "c:/php/php5apache.dll"
LoadModule php5_module "C:/php/php5apache.dll"
# Add to the end of the AddModule section
AddModule mod_php5.c
@ -780,7 +781,7 @@ Apache 2.0.x on Microsoft Windows
We do not recommend using a threaded MPM in production with Apache2.
Use the prefork MPM instead, or use Apache1. For information on why,
read the following FAQ entry
read the related FAQ entry on using Apache2 with a threaded MPM
You are highly encouraged to take a look at the Apache Documentation
to get a basic understanding of the Apache 2.0.x Server. Also consider
@ -792,8 +793,8 @@ Apache 2.0.x on Microsoft Windows
* PHP 4.3.0 or later available at http://www.php.net/downloads.php.
* the latest stable development version. Get the source code
http://snaps.php.net/php4-latest.tar.gz or download binaries for
Windows http://snaps.php.net/win32/php4-win32-latest.zip.
http://snaps.php.net/php5-latest.tar.gz or download binaries for
Windows http://snaps.php.net/win32/php5-win32-latest.zip.
* a prerelease version downloadable from http://qa.php.net/.
* you have always the option to obtain PHP through anonymous CVS.
@ -857,6 +858,7 @@ Installing as an Apache module
Example 2-6. PHP and Apache 2.0 as Module
# For PHP 4 do something like this:
LoadModule php4_module "c:/php/php4apache2.dll"
# Don't forget to copy the php4apache2.dll file from the sapi directory!
AddType application/x-httpd-php .php
# For PHP 5 do something like this:
@ -866,11 +868,11 @@ AddType application/x-httpd-php .php
# configure the path to php.ini
PHPIniDir "C:/php"
Note: Remember to substitute the c:/php/ for your actual path to
PHP in the above examples. Take care to use either php4apache2.dll
or php5apache2.dll in your LoadModule directive and not
php4apache.dll or php5apache.dll as the latter ones are designed to
run with Apache 1.3.x.
Note: Remember to substitute your actual path to PHP for the
c:/php/ in the above examples. Take care to use either
php4apache2.dll or php5apache2.dll in your LoadModule directive and
not php4apache.dll or php5apache.dll as the latter ones are
designed to run with Apache 1.3.x.
Note: If you want to use content negotiation, read related FAQ.
@ -1178,22 +1180,28 @@ Installation of extensions on Windows
The DLLs for PHP extensions are prefixed with php_.
Note: In PHP 4.3.1 BCMath, Calendar, COM, Ctype, FTP, MySQL, ODBC,
Overload, PCRE, Session, Tokenizer, WDDX, XML and Zlib support is
built in. You don't need to load any additional extensions in order
to use these functions. See your distributions README.txt or
install.txt or this table for a list of built in modules.
Many extensions are built into the Windows version of PHP. This means
additional DLL files, and the extension directive, are not used to
load these extensions. The Windows PHP Extensions table lists
extensions that require, or used to require, additional PHP DLL files.
Here's a list of built in extensions:
The default location PHP searches for extensions is c:\php4\extensions
in PHP 4 and c:\php5 in PHP 5. To change this setting to reflect your
In PHP 4 (updated PHP 4.3.11): BCMath, Caledar, COM, Ctype, FTP,
MySQL, ODBC, Overload, PCRE, Session, Tokenizer, WDDX, XML and Zlib
In PHP 5 (updated PHP 5.0.4), the following changes exist. Built in:
DOM, LibXML, Iconv, SimpleXML, SPL and SQLite. And the following are
no longer built in: MySQL and Overload.
The default location PHP searches for extensions is C:\php4\extensions
in PHP 4 and C:\php5 in PHP 5. To change this setting to reflect your
setup of PHP edit your php.ini file:
* You will need to change the extension_dir setting to point to the
directory where your extensions lives, or where you have placed
your php_*.dll files. Please do not forget the last backslash. For
example:
your php_*.dll files. For example:
extension_dir = c:/php/extensions/
extension_dir = C:\php\extensions
* Enable the extension(s) in php.ini you want to use by uncommenting
the extension=php_*.dll lines in php.ini. This is done by deleting
@ -1310,24 +1318,24 @@ Chapter 3. Installation of PECL extensions
Introduction to PECL Installations
PHP extensions may be installed in a variety of ways. PECL is a
repository of PHP extensions living within the PEAR structure, and the
following demonstrates how to install these extensions.
PECL is a repository of PHP extensions that are made available to you
via the PEAR packaging system. This section of the manual is intended
to demonstrate how to obtain and install PECL extensions.
These instructions assume /your/phpsrcdir/ is the path to the PHP
source, and extname is the name of the PECL extension. Adjust
accordingly. These instructions also assume a familiarity with the
pear command.
source distribution, and that extname is the name of the PECL
extension. Adjust accordingly. These instructions also assume a
familiarity with the pear command.
Shared extensions may be installed by including them inside of php.ini
using the extension PHP directive. See also the extensions_dir
directive, and dl(). The installation methods described below do not
automatically configure PHP to include these extensions, this step
must be done manually.
To be useful, a shared extension must be built, installed, and loaded.
The methods described below provide you with various instructions on
how to build and install the extensions, but they do not automatically
load them. Extensions can be loaded by adding an extension directive.
To this php.ini file, or through the use of the dl() function.
When building PHP modules, it's important to have the appropriate
versions of the required tools (autoconf, automake, libtool, etc.) See
the Anonymous CVS Instructions for details on the required tools, and
When building PHP modules, it's important to have known-good versions
of the required tools (autoconf, automake, libtool, etc.) See the
Anonymous CVS Instructions for details on the required tools, and
required versions.
_________________________________________________________________
@ -1336,16 +1344,19 @@ Downloading PECL extensions
There are several options for downloading PECL extensions, such as:
* http://pecl.php.net
Listed here is information like the ChangeLog, release
information, requirements, revisions, etc. Although not every PECL
extension has a webpage, most do.
The PECL web site contains information about the different
extensions that are offered by the PHP Development Team. The
information available here includes: ChangeLog, release notes,
requirements and other similar details.
* pear download extname
The pear command may also be used to download source files.
PECL extensions that have releases listed on the PECL web site are
available for download and installation using the pear command.
Specific revisions may also be specified.
* CVS
All PECL files reside in CVS. A web-based view may be seen at
http://cvs.php.net/pecl/. To download straight from CVS, consider
the following where phpfi is the password for user cvsread:
Most PECL extensions also reside in CVS. A web-based view may be
seen at http://cvs.php.net/pecl/. To download straight from CVS,
the following sequence of commands may be used. Note that phpfi is
the password for user cvsread:
$ cvs -d:pserver:cvsread@cvs.php.net:/repository login
$ cvs -d:pserver:cvsread@cvs.php.net:/repository co pecl/extname
@ -1359,9 +1370,10 @@ $ cvs -d:pserver:cvsread@cvs.php.net:/repository co pecl/extname
PECL for Windows users
Like with any other PHP extension DLL, to install move the PECL
extension DLLs into the extension_dir folder and include them within
php.ini. For example:
As with any other PHP extension DLL, installation is as simple as
copying the PECL extension DLLs into the extension_dir folder and
loading them from php.ini. For example, add the following line to your
php.ini:
extension=php_extname.dll
@ -1375,67 +1387,76 @@ Compiling shared PECL extensions with PEAR
$ pear install extname
That will download the source for extname, and compile it on the
system. This results in an extname.so file that may then be included
in php.ini
This will download the source for extname, compile, and install
extname.so into your extension_dir. extname.so may then be loaded via
php.ini
In case the systems preferred_state is set higher than an available
extname version, like it's set to stable and the extension is still in
beta, either alter the preferred_state via pear config-set or specify
a specific version of the PECL extension. For example:
By default, the pear command will not install packages that are marked
with the alpha or beta state. If no stable packages are available, you
may install a beta package using the following command:
$ pear install extname-0.1.1
$ pear install extname-beta
Regardless, pear will copy this extname.so into the extensions
directory. Adjust php.ini accordingly.
You may also install a specific version using this variant:
$ pear install extname-0.1
_________________________________________________________________
Compiling shared PECL extensions with phpize
If using pear is not an option, like for building shared PECL
extensions from CVS, or for unreleased PECL packages, then creating a
shared extension may also be done by manually using the phpize
command. The pear command essentially does this but it may also be
done manually. Assuming the source file is named extname.tgz, and that
it was downloaded into the current directory, consider the following:
Sometimes, using the pear installer is not an option. This could be
because you're behind a firewall, or it could be because the extension
you want to install is not available as a PEAR compatible package,
such as unreleased extensions from CVS. If you need to build such an
extension, you can use the lower-level build tools to perform the
build manually.
The phpize command is used to prepare the build environment for a PHP
extension. In the following sample, the sources for an extension are
in a directory named extname:
$ pear download extname
$ gzip -d < extname.tgz | tar -xvf -
$ cd extname
$ phpize
$ ./configure && make
$ ./configure
$ make
# make install
Upon success, this will create extname.so and put it into the modules/
and/or .libs/ directory within the extname/ source. Move this shared
extension (extname.so) into the PHP extensions directory, and adjust
php.ini accordingly.
A successful install will have created extname.so and put it into the
PHP extensions directory. You'll need to and adjust php.ini and add an
extension=extname.so line before you can use the extension.
_________________________________________________________________
Compiling PECL extensions statically into PHP
To statically include the extension within the PHP build, put the
extensions source into the ext/ directory found in the PHP source. For
example:
You might find that you need to build a PECL extension statically into
your PHP binary. To do this, you'll need to place the extension source
under the php-src/ext/ directory and tell the PHP build system to
regenerate its configure script.
$ cd /your/phpsrcdir/ext
$ pear download extname
$ gzip -d < extname.tgz | tar -xvf -
$ mv extname-x.x.x extname
$ rm package.xml
This will result in the following directory:
/your/phpsrcdir/ext/extname
From here, build PHP as normal:
From here, force PHP to rebuild the configure script, and then build
PHP as normal:
$ cd /your/phpsrcdir
$ ./buildconf
$ rm configure
$ ./buildconf --force
$ ./configure --help
$ ./configure --with-extname --enable-someotherext --with-foobar
$ make
$ make install
Note: To run the 'buildconf' script you need autoconf 2.13 and
automake 1.4+ (newer versions of autoconf may work, but are not
supported).
Whether --enable-extname or --with-extname is used depends on the
extension. Typically an extension that does not require external
libraries uses --enable. To be sure, run the following after
@ -1492,14 +1513,23 @@ The configuration file
versions of PHP, this happens only once when the web server is
started. For the CGI and CLI version, it happens on every invocation.
The default location of php.ini is a compile time option (see the FAQ
entry), but can be changed for the CGI and CLI version with the -c
command line switch, see the chapter about using PHP from the command
line. You can also use the environment variable PHPRC for an
additional path to search for a php.ini file.
php.ini is searched in these locations (in order):
* SAPI module specific location (PHPIniDir directive in Apache 2, -c
command line option in CGI and CLI, php_ini parameter in NSAPI,
PHP_INI_PATH environment variable in THTTPD)
* HKEY_LOCAL_MACHINE\SOFTWARE\PHP\IniFilePath (Windows Registry
location)
* The PHPRC environment variable
* Current working directory (for CLI)
* The web server's directory (for SAPI modules), or directory of PHP
(otherwise in Windows)
* Windows directory (C:\windows or C:\winnt) (for Windows), or
--with-config-file-path compile time option
If php-SAPI.ini exists (where SAPI is used SAPI, so the filename is
e.g. php-cli.ini or php-apache.ini), it's used instead of php.ini.
SAPI name can be determined by php_sapi_name().
Note: The Apache web server changes the directory to root at
startup causing PHP to attempt to read php.ini from the root
@ -1507,11 +1537,11 @@ The configuration file
The php.ini directives handled by extensions are documented
respectively on the pages of the extensions themselves. The list of
the core directives is available in the appendix. Probably not all the
PHP directives are documented in the manual though. For a completel
list of directives available in your PHP version, please read your
well commented php.ini file. Alternatively, you may find the the
latest php.ini from CVS helpful too.
the core directives is available in the appendix. Probably not all PHP
directives are documented in the manual though. For a complete list of
directives available in your PHP version, please read your well
commented php.ini file. Alternatively, you may find the the latest
php.ini from CVS helpful too.
Example 5-1. php.ini example
; any text on a line after an unquoted semicolon (;) is ignored
@ -1527,6 +1557,10 @@ include_path = ".:/usr/local/lib/php"
; backslashes are treated the same as any other character
include_path = ".;c:\php\lib"
Since PHP 5.1.0, it is possible to refer to existing .ini variables
from within .ini files. Example: open_basedir = ${open_basedir}
":/new/dir".
_________________________________________________________________
How to change configuration settings
@ -1622,3 +1656,420 @@ Other interfaces to PHP
function, and review the resulting page. You can also access the
values of individual configuration directives at runtime using
ini_get() or get_cfg_var().
_________________________________________________________________
Chapter 6. Installation FAQ
This section holds common questions about the way to install PHP. PHP
is available for almost any OS (except maybe for MacOS before OSX),
and almost any web server.
To install PHP, follow the instructions in the INSTALL file located in
the distribution. Windows users should also read the install.txt file.
There are also some helpful hints for Windows users here.
1. Why shouldn't I use Apache2 with a threaded MPM in a production
environment?
2. Unix/Windows: Where should my php.ini file be located?
3. Unix: I installed PHP, but every time I load a document, I get the
message 'Document Contains No Data'! What's going on here?
4. Unix: I installed PHP using RPMS, but Apache isn't processing the
PHP pages! What's going on here?
5. Unix: I installed PHP 3 using RPMS, but it doesn't compile with the
database support I need! What's going on here?
6. Unix: I patched Apache with the FrontPage extensions patch, and
suddenly PHP stopped working. Is PHP incompatible with the
Apache FrontPage extensions?
7. Unix/Windows: I have installed PHP, but when I try to access a PHP
script file via my browser, I get a blank screen.
8. Unix/Windows: I have installed PHP, but when try to access a PHP
script file via my browser, I get a server 500 error.
9. Some operating systems: I have installed PHP without errors, but
when I try to start apache I get undefined symbol errors:
[mybox:user /src/php4] root# apachectl configtest
apachectl: /usr/local/apache/bin/httpd Undefined symbols:
_compress
_uncompress
10. Windows: I have installed PHP, but when I to access a PHP script
file via my browser, I get the error:
cgi error:
The specified CGI application misbehaved by not
returning a complete set of HTTP headers.
The headers it did return are:
11. Windows: I've followed all the instructions, but still can't get
PHP and IIS to work together!
12. When running PHP as CGI with IIS, PWS, OmniHTTPD or Xitami, I get
the following error: Security Alert! PHP CGI cannot be accessed
directly..
13. How do I know if my php.ini is being found and read? It seems like
it isn't as my changes aren't being implemented.
14. How do I add my PHP directory to the PATH on Windows?
15. How do I make the php.ini file available to PHP on windows?
16. Is it possible to use Apache content negotiation (MultiViews
option) with PHP?
17. Is PHP limited to process GET and POST request methods only?
1. Why shouldn't I use Apache2 with a threaded MPM in a production
environment?
PHP is glue. It is the glue used to build cool web applications by
sticking dozens of 3rd-party libraries together and making it all
appear as one coherent entity through an intuitive and easy to learn
language interface. The flexibility and power of PHP relies on the
stability and robustness of the underlying platform. It needs a
working OS, a working web server and working 3rd-party libraries to
glue together. When any of these stop working PHP needs ways to
identify the problems and fix them quickly. When you make the
underlying framework more complex by not having completely separate
execution threads, completely separate memory segments and a strong
sandbox for each request to play in, feet of clay are introduced into
PHP's system.
If you feel you have to use a threaded MPM, look at a FastCGI
configuration where PHP is running in its own memory space.
And finally, this warning against using a threaded MPM is not as
strong for Windows systems because most libraries on that platform
tend to be threadsafe.
2. Unix/Windows: Where should my php.ini file be located?
By default on Unix it should be in /usr/local/lib which is
<install-path>/lib. Most people will want to change this at
compile-time with the --with-config-file-path flag. You would, for
example, set it with something like:
--with-config-file-path=/etc
And then you would copy php.ini-dist from the distribution to
/etc/php.ini and edit it to make any local changes you want.
--with-config-file-scan-dir=PATH
On Windows the default path for the php.ini file is the Windows
directory. If you're using the Apache webserver, php.ini is first
searched in the Apaches install directory, e.g. c:\program
files\apache group\apache. This way you can have different php.ini
files for different versions of Apache on the same machine.
See also the chapter about the configuration file.
3. Unix: I installed PHP, but every time I load a document, I get the
message 'Document Contains No Data'! What's going on here?
This probably means that PHP is having some sort of problem and is
core-dumping. Look in your server error log to see if this is the
case, and then try to reproduce the problem with a small test case. If
you know how to use 'gdb', it is very helpful when you can provide a
backtrace with your bug report to help the developers pinpoint the
problem. If you are using PHP as an Apache module try something like:
* Stop your httpd processes
* gdb httpd
* Stop your httpd processes
* > run -X -f /path/to/httpd.conf
* Then fetch the URL causing the problem with your browser
* > run -X -f /path/to/httpd.conf
* If you are getting a core dump, gdb should inform you of this now
* type: bt
* You should include your backtrace in your bug report. This should
be submitted to http://bugs.php.net/
If your script uses the regular expression functions (ereg() and
friends), you should make sure that you compiled PHP and Apache with
the same regular expression package. This should happen automatically
with PHP and Apache 1.3.x
4. Unix: I installed PHP using RPMS, but Apache isn't processing the
PHP pages! What's going on here?
Assuming you installed both Apache and PHP from RPM packages, you need
to uncomment or add some or all of the following lines in your
httpd.conf file:
# Extra Modules
AddModule mod_php.c
AddModule mod_php3.c
AddModule mod_perl.c
# Extra Modules
LoadModule php_module modules/mod_php.so
LoadModule php3_module modules/libphp3.so # for PHP 3
LoadModule php4_module modules/libphp4.so # for PHP 4
LoadModule perl_module modules/libperl.so
And add:
AddType application/x-httpd-php3 .php3 # for PHP 3
AddType application/x-httpd-php .php # for PHP 4
... to the global properties, or to the properties of the
VirtualDomain you want to have PHP support added to.
5. Unix: I installed PHP 3 using RPMS, but it doesn't compile with the
database support I need! What's going on here?
Due to the way PHP 3 built, it is not easy to build a complete
flexible PHP RPM. This issue is addressed in PHP 4. For PHP 3, we
currently suggest you use the mechanism described in the
INSTALL.REDHAT file in the PHP distribution. If you insist on using an
RPM version of PHP 3, read on...
The RPM packagers are setting up the RPMS to install without database
support to simplify installations and because RPMS use /usr/ instead
of the standard /usr/local/ directory for files. You need to tell the
RPM spec file which databases to support and the location of the
top-level of your database server.
This example will explain the process of adding support for the
popular MySQL database server, using the mod installation for Apache.
Of course all of this information can be adjusted for any database
server that PHP supports. We will assume you installed MySQL and
Apache completely with RPMS for this example as well.
* First remove mod_php3 :
rpm -e mod_php3
* Then get the source rpm and INSTALL it, NOT --rebuild
rpm -Uvh mod_php3-3.0.5-2.src.rpm
* Then edit the /usr/src/redhat/SPECS/mod_php3.spec file
In the %build section add the database support you want, and the
path.
For MySQL you would add --with-mysql=/usr The %build section will
look something like this:
./configure --prefix=/usr \
--with-apxs=/usr/sbin/apxs \
--with-config-file-path=/usr/lib \
--enable-debug=no \
--enable-safe-mode \
--with-exec-dir=/usr/bin \
--with-mysql=/usr \
--with-system-regex
* Once this modification is made then build the binary rpm as
follows:
rpm -bb /usr/src/redhat/SPECS/mod_php3.spec
* Then install the rpm
rpm -ivh /usr/src/redhat/RPMS/i386/mod_php3-3.0.5-2.i386.rpm
Make sure you restart Apache, and you now have PHP 3 with MySQL
support using RPM's. Note that it is probably much easier to just
build from the distribution tarball of PHP 3 and follow the
instructions in INSTALL.REDHAT found in that distribution.
6. Unix: I patched Apache with the FrontPage extensions patch, and
suddenly PHP stopped working. Is PHP incompatible with the Apache
FrontPage extensions?
No, PHP works fine with the FrontPage extensions. The problem is that
the FrontPage patch modifies several Apache structures, that PHP
relies on. Recompiling PHP (using 'make clean ; make') after the FP
patch is applied would solve the problem.
7. Unix/Windows: I have installed PHP, but when I try to access a PHP
script file via my browser, I get a blank screen.
Do a 'view source' in the web browser and you will probably find that
you can see the source code of your PHP script. This means that the
web server did not send the script to PHP for interpretation.
Something is wrong with the server configuration - double check the
server configuration against the PHP installation instructions.
8. Unix/Windows: I have installed PHP, but when try to access a PHP
script file via my browser, I get a server 500 error.
Something went wrong when the server tried to run PHP. To get to see a
sensible error message, from the command line, change to the directory
containing the PHP executable (php.exe on Windows) and run php -i. If
PHP has any problems running, then a suitable error message will be
displayed which will give you a clue as to what needs to be done next.
If you get a screen full of HTML codes (the output of the phpinfo()
function) then PHP is working, and your problem may be related to your
server configuration which you should double check.
9. Some operating systems: I have installed PHP without errors, but
when I try to start apache I get undefined symbol errors:
[mybox:user /src/php4] root# apachectl configtest
apachectl: /usr/local/apache/bin/httpd Undefined symbols:
_compress
_uncompress
This has actually nothing to do with PHP, but with the MySQL client
libraries. Some need --with-zlib, others do not. This is also covered
in the MySQL FAQ.
10. Windows: I have installed PHP, but when I to access a PHP script
file via my browser, I get the error:
cgi error:
The specified CGI application misbehaved by not
returning a complete set of HTTP headers.
The headers it did return are:
This error message means that PHP failed to output anything at all. To
get to see a sensible error message, from the command line, change to
the directory containing the PHP executable (php.exe on Windows) and
run php -i. If PHP has any problems running, then a suitable error
message will be displayed which will give you a clue as to what needs
to be done next. If you get a screen full of HTML codes (the output of
the phpinfo() function) then PHP is working.
Once PHP is working at the command line, try accessing the script via
the browser again. If it still fails then it could be one of the
following:
* File permissions on your PHP script, php.exe, php4ts.dll, php.ini
or any PHP extensions you are trying to load are such that the
anonymous internet user ISUR_<machinename> cannot access them.
* The script file does not exist (or possibly isn't where you think
it is relative to your web root directory). Note that for IIS you
can trap this error by ticking the 'check file exists' box when
setting up the script mappings in the Internet Services Manager.
If a script file does not exist then the server will return a 404
error instead. There is also the additional benefit that IIS will
do any authentication required for you based on the NTLanMan
permissions on your script file.
11. Windows: I've followed all the instructions, but still can't get
PHP and IIS to work together!
Make sure any user who needs to run a PHP script has the rights to run
php.exe! IIS uses an anonymous user which is added at the time IIS is
installed. This user needs rights to php.exe. Also, any authenticated
user will also need rights to execute php.exe. And for IIS4 you need
to tell it that PHP is a script engine. Also, you will want to read
this faq.
12. When running PHP as CGI with IIS, PWS, OmniHTTPD or Xitami, I get
the following error: Security Alert! PHP CGI cannot be accessed
directly..
You must set the cgi.force_redirect directive to 0. It defaults to 1
so be sure the directive isn't commented out (with a ;). Like all
directives, this is set in php.ini
Because the default is 1, it's critical that you're 100% sure that the
correct php.ini file is being read. Read this faq for details.
13. How do I know if my php.ini is being found and read? It seems like
it isn't as my changes aren't being implemented.
To be sure your php.ini is being read by PHP, make a call to phpinfo()
and near the top will be a listing called Configuration File
(php.ini). This will tell you where PHP is looking for php.ini and
whether or not it's being read. If just a directory PATH exists than
it's not being read and you should put your php.ini in that directory.
If php.ini is included within the PATH than it is being read.
If php.ini is being read and you're running PHP as a module, then be
sure to restart your web server after making changes to php.ini
14. How do I add my PHP directory to the PATH on Windows?
On Windows NT, 2000, XP and 2003:
* Go to Control Panel and open the System icon (Start -> Settings ->
Control Panel -> System, or just Start -> Control Panel -> System
for Windows XP/2003)
* Go to the Advanced tab
* Click on the 'Environment Variables' button
* Look into the 'System Variables' pane
* Find the Path entry (you may need to scroll to find it)
* Double click on the Path entry
* Enter your PHP directory ant the end, including ';' before (e.g.
;C:\php)
* Press OK and restart your computer
On Windows 98/Me you need to edit the autoexec.bat file:
* Open the Notepad (Start -> Run and enter notepad)
* Open the C:\autoexec.bat file
* Locate the line with PATH=C:\WINDOWS;C:\WINDOWS\COMMAND;..... and
add: ;C:\php to the end of the line
* Save the file and restart your computer
Note: Be sure to reboot after following the steps above to ensure
that the PATH changes are applied.
The PHP manual used to promote the copying of files into the Windows
system directory, this is because this directory (C:\Windows,
C:\WINNT, etc.) is by default in the systems PATH. Copying files into
the Windows system directory has long since been deprecated and may
cause problems.
15. How do I make the php.ini file available to PHP on windows?
There are several ways of doing this. If you are using Apache, read
their installation specific instructions (Apache 1, Apache 2),
otherwise you must set the PHPRC environment variable:
On Windows NT, 2000, XP and 2003:
* Go to Control Panel and open the System icon (Start -> Settings ->
Control Panel -> System, or just Start -> Control Panel -> System
for Windows XP/2003)
* Go to the Advanced tab
* Click on the 'Environment Variables' button
* Look into the 'System variables' pane
* Click on 'New' and enter 'PHPRC' as the variable name and the
directory where php.ini is located as the variable value (e.g.
C:\php)
* Press OK and restart your computer
On Windows 98/Me you need to edit the autoexec.bat file:
* Open the Notepad (Start -> Run and enter notepad)
* Open the C:\autoexec.bat file
* Add a new line to the end of the file: set PHPRC=C:\php (replace
C:\php with the directory where php.ini is located). Please note
that the path cannot contain spaces. For instance, if you have
installed PHP in C:\Program Files\PHP, you would enter
C:\PROGRA~1\PHP instead.
* Save the file and restart your computer
16. Is it possible to use Apache content negotiation (MultiViews
option) with PHP?
If links to PHP files include extension, everything works perfect.
This FAQ is only for the case when links to PHP files don't include
extension and you want to use content negotiation to choose PHP files
from URL with no extension. In this case, replace the line AddType
application/x-httpd-php .php with:
# PHP 4
AddHandler php-script php
AddType text/html php
# PHP 5
AddHandler php5-script php
AddType text/html php
This solution doesn't work for Apache 1 as PHP module doesn't catch
php-script.
17. Is PHP limited to process GET and POST request methods only?
No, it is possible to handle any request method, e.g. CONNECT. Proper
response status can be sent with header(). If only GET and POST
methods should be handled, it can be achieved with this Apache
configuration:
<LimitExcept GET POST>
Deny from all
</LimitExcept>