php-src/README.UPDATE_5_2
2006-05-14 19:23:19 +00:00

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PHP 5.2 Update info or NEWS explained
- Added new error mode E_RECOVERABLE_ERROR. (Derick, Marcus, Tony)
This changes a few E_ERROR conditions to something that you can now catch
using a user error handler. If the user error handler does not grab these
kind of error they behave as fatal errors just like in any PHP version prior
to 5.2. Errors of this type are logged as 'Catchable fatal error'.
- Removed ze1 compatibility mode. (Marcus)
The backwards compatibility support for the old PHP 4.x object handling that
uses copying by default instead of the 5.x reference handling has been
removed completley.
- Added support for constructors in interfaces to force constructor signature
checks in implementations. (Marcus)
Starting with PHP 5.2 interfaces can have constructors. If you use this
feature then all implementing classes must implement constructors with a
matching signature, while normally constructors do not need to follow any
base class or interface constructor signature. (Signature is the name for
the parameter and return type definition which captures count, reference or
not and any type hints).
- Changed __toString to be called whereever applicable. (Marcus)
The magic object method __toString() is now called whenever an object is used
as a string. The function must not throw an exception or the script will be
terminated. The PHP 5.0/%51 fallback to return a string containing the object
idetifier has been dropped. Note that the object identifier is never unique.
That measn that if you have used this feature your application has been
flawed. Nonetheless it will now be a catchable fatal error (see above).
- Added RFC2397 (data: stream) support. (Marcus)
Under windows this can mean a very rare change of behavior. If you are using
NTFS filesystem and making use of meta streams in your application this does
no longer work for a file with the name 'data' accessed without any path. IF
you need to do so you have to prefix the filename with the "file:" protocol.