时到今日,PHP 5已发布三年之久。在这三年期间,PHP 4仍然有不少的改进。然而 PHP 5 的快速演进及 PHP 6 计划的启动,促进了 PHP 4 退役的需要。
PHP 开发小组日前正式宣布对 PHP 4 的支持将会在今年年底结束,也就是说在2007年12月31日之后,当前的 PHP 4.4 版将不再更新,但开发小组在2008年08月08日前仍将逐个修复所发现的严重漏洞。开发小组建议所有的用户年内升级其应用程序,以便向 PHP 5 迁移。
关于向 PHP 5 升级的详细信息,可参见
迁移指南,同时也有
从 PHP 5.0 升级到 PHP 5.1 和
从 PHP 5.1 升级到 PHP 5.2 的指南。
公告的英文原版:Today it is exactly three years ago since PHP 5 has been released. In those three years it has seen many improvements over PHP 4. PHP 5 is fast, stable & production-ready and as PHP 6 is on the way, PHP 4 will be discontinued.
The PHP development team hereby announces that support for PHP 4 will continue until the end of this year only. After 2007-12-31 there will be no more releases of PHP 4.4. We will continue to make critical security fixes available on a case-by-case basis until 2008-08-08. Please use the rest of this year to make your application suitable to run on PHP 5.
For documentation on migration for PHP 4 to PHP 5, we would like to point you to our
migration guide. There is additional information available in the
PHP 5.0 to PHP 5.1 and
PHP 5.1 to PHP 5.2 migration guides as well.