Extensions

Extensions that are gone from the PHP core

One of the first things you're likely to notice when you download PHP 5.1.x is that several of the older extensions have disappeared. Those extensions that are still actively maintained are available in the PHP Extension Community Library (PECL), at » http://pecl.php.net/.

Removed extensions
Extension Alternative/Status
ext/cpdfpecl/pdflib
ext/dbxpecl/dbx
ext/diopecl/dio
ext/famNot actively maintained
ext/ingres_iipecl/ingres
ext/ircgNot actively maintained
ext/mcvepecl/mcve
ext/mnogosearchNot actively maintained
ext/oracle ext/oci8 or ext/pdo_oci
ext/ovrimosNot actively maintained
ext/pfproNot actively maintained
ext/w32api» pecl/ffi
ext/ypNot actively maintained
ext/activescript » pecl/activescript

Modules in PECL that are not actively maintained (i.e. have not been supported for some time, have no active maintainer working on them currently, and do not have any PECL package releases), are still available in SVN at » http://svn.php.net/viewvc/pecl. However, unreleased PHP modules are by their nature unsupported, and your mileage may vary when attempting to install or use them.


Class constants in new PHP 5.1.x extensions

The Zend Engine 2.1 API allows extension developers to declare class constants in object oriented extensions. New extensions written for PHP 5.1.x, including SPL, PDO, XMLReader and date, have their constants in the format PDO::CLASS_CONSTANT rather than in the C format PDO_CLASS_CONSTANT in order to minimise pollution of the global namespace in PHP.


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