Editing PHP (section)

=== PHP 5 ===
On 1 July 2004, PHP 5 was released, powered by the new Zend Engine II.<ref name="The PHP Group" /> PHP&nbsp;5 included new features such as improved support for [[object-oriented programming]], the PHP Data Objects (PDO) extension (which defines a lightweight and consistent interface for accessing databases), and numerous performance enhancements.<ref>{{cite web|title=Why PHP&nbsp;5 Rocks!|url=http://www.onlamp.com/pub/a/php/2004/07/15/UpgradePHP5.html|publisher=O'Reilly|access-date=2008-02-22|date=2004-07-15|author=Trachtenberg, Adam|archive-date=2016-03-31|archive-url=https://web.archive.org/web/20160331232050/http://www.onlamp.com/pub/a/php/2004/07/15/UpgradePHP5.html|url-status=dead}}</ref> In 2008, PHP&nbsp;5 became the only stable version under development. [[Late static binding]] had been missing from previous versions of PHP, and was added in version 5.3.<ref>{{cite web|url=http://www.digitalsandwich.com/archives/53-Late-Static-Binding-in-PHP.html|access-date=2008-03-25|title=Late Static Binding in PHP|date=2006-02-23|publisher=Digital Sandwich}}</ref><ref>{{cite web|access-date=2008-03-25|url=https://www.php.net/language.oop5.static|title=Static Keyword|publisher=The PHP Group}}</ref>

Many high-profile open-source projects ceased to support PHP&nbsp;4 in new code from February 5, 2008, because of the GoPHP5 initiative,<ref name="GoPHP5">{{cite web | url=http://www.gophp5.org/projects|title=GoPHP5 | url-status=dead | archive-url=https://web.archive.org/web/20110717133313/http://gophp5.org/projects | archive-date=2011-07-17}}</ref> provided by a consortium of PHP developers promoting the transition from PHP&nbsp;4 to PHP&nbsp;5.<ref name="GoPHP5 Press Release">{{cite web |url=http://gophp5.org/sites/gophp5.org/files/press_release.pdf |title=PHP projects join forces to Go PHP&nbsp;5 |access-date=2008-02-23 |work=GoPHP5 Press Release | url-status=dead | archive-url=https://web.archive.org/web/20190804012720/http://gophp5.org/sites/gophp5.org/files/press_release.pdf | archive-date=2019-08-04}}</ref><ref>{{cite web|url=http://gophp5.org/|title=GoPHP5|publisher=GoPHP5|access-date=2008-02-22 | url-status=dead | archive-url=https://web.archive.org/web/20110427101913/http://www.gophp5.org/ | archive-date=2011-04-27}}</ref>

Over time, PHP interpreters became available on most existing [[32-bit]] and [[64-bit]] operating systems, either by building them from the PHP source code or by using pre-built binaries.<ref>{{cite web
| url = https://www.php.net/manual/en/install.php
| title = PHP Installation and Configuration
| access-date = 2013-10-29
| website = php.net
}}</ref> For PHP versions 5.3 and 5.4, the only available [[Microsoft Windows]] binary distributions were 32-bit [[IA-32]] builds,<ref>{{cite web
| url = https://windows.php.net/download/#php-5.3
| title = PHP for Windows: Binaries and sources releases (5.3)
| access-date = 2013-10-29
| website = php.net
}}</ref><ref>{{cite web
| url = https://windows.php.net/download/#php-5.4
| title = PHP for Windows: Binaries and sources releases (5.4)
| access-date = 2013-10-29
| website = php.net
}}</ref> requiring Windows 32-bit compatibility mode while using [[Internet Information Services]] (IIS) on a 64-bit Windows platform. PHP version 5.5 made the 64-bit [[x86-64]] builds available for Microsoft Windows.<ref>{{cite web
| url = https://windows.php.net/download/#php-5.5
| title = PHP for Windows: Binaries and sources releases (5.5)
| access-date = 2013-10-29
| website = php.net
}}</ref>

Official security support for PHP 5.6 ended on 31 December 2018.<ref>{{Cite web | url=https://php.net/supported-versions.php |title = PHP: Supported Versions}}</ref>