What has changed in PHP 5.2.x » « 其他改变 PHP 手册 附录 Migrating from PHP 5.1.x to PHP 5.2.x Table of ContentsWhat has changed in PHP 5.2.xBackward Incompatible ChangesNew Error MessagesChanges in PHP datetime supportNew ParametersNew FunctionsNew MethodsRemoved ExtensionsNew ExtensionsNew ClassesNew Global ConstantsNew Class ConstantsNew INI Configuration DirectivesError ReportingOther Enhancements 参见 PHP 版本迁移指南 5.0.x, 5.1.x, 5.3.x, 5.4.x, 5.5.x and 5.6.x. add a note User Contributed Notes There are no user contributed notes for this page. 备份地址:http://www.lvesu.com/blog/php/migration52.php