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71 lines
2.6 KiB
Plaintext
71 lines
2.6 KiB
Plaintext
1. strrpos() and strripos() now use the entire string as a needle.
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Be aware that the existing scripts may no longer work as you expect.
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EX :
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<?php
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var_dump(strrpos("ABCDEF","DEF"));
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var_dump(strrpos("ABCDEF","DAF"));
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?>
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Will give you different results. The former returns 3 while the latter
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returns false rather than the position of the last occurrence of 'D'.
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The same applies to strripos().
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2. Illegal use of string offsets causes E_ERROR instead of E_WARNING.
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EX :
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<?php
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$a = "foo";
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unset($a[0][1][2]);
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?>
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Fatal error: Cannot use string offset as an array in ... on line 1
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3. array_merge() was changed to accept only arrays. If a non-array variable is
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passed, a E_WARNING will be thrown for every such parameter. Be careful
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because your code may start emitting E_WARNING out of the blue.
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4. Be careful when porting from ext/mysql to ext/mysqli. The following
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functions return NULL when no more data is available in the result set
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(ext/mysql's functions return FALSE).
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- mysqli_fetch_row()
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- mysqli_fetch_array()
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- mysqli_fetch_assoc()
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5. PATH_TRANSLATED server variable is no longer set implicitly under
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Apache2 SAPI in contrast to the situation in PHP 4, where it is set to the
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same value as the SCRIPT_FILENAME server variable when it is not populated
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by Apache. This change was made to comply with the CGI specification.
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Please refer to bug #23610 for further information.
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6. Starting PHP 5.0.0 the T_ML_CONSTANT constant is no longer defined by the
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ext/tokenizer extension. If error_reporting is set to E_ALL notices will
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be produced. Instead of T_ML_CONSTANT for /* */ the T_COMMENT constant
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is used, thus both // and /* */ are resolved as the T_COMMENT constant.
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However the PHPDoc style comments /** */ ,which starting PHP 5 are parsed
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by PHP, are recongnized as T_DOC_COMMENT.
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7. $_SERVER should be populated with argc and argv if variables_order
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includes "S". If you have specifically configured your system to not
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create $_SERVER, then of course it shouldn't be there. The change was to
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always make argc and argv available in the CLI version regardless of the
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variables_order setting. As in, the CLI version will now always populate
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the global $argc and $argv variables.
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8. Classes must be declared before used:
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<?php
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$test = new fubar();
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$test->barfu();
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class fubar {
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function barfu() {
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echo 'fubar';
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}
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}
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?>
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This script is perfectly valid and works in PHP 4 but with PHP 5 there
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will be a fatal error like :
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Fatal error: Class 'fubar' not found in ....
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If there is defined function __autoload() it will be called.
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