PHP 5.5：嗯，虽然我们很讨厌mysql插件，但是……我们还是给他添加了新功能呢……

mysql:
· This extension is now deprecated, and deprecation warnings will be generated when connections are established to databases via mysql_connect(), mysql_pconnect(), or through implicit connection: use MySQLi or PDO_MySQL instead

· Dropped support for LOAD DATA LOCAL INFILE handlers when using libmysql. Known for stability problems

· [高亮]Added support for SHA256 authentication available with MySQL 5.6.6+[/高亮]

这简直就是难舍难分啊。其实我觉得这个插件没必要弃用啊，有更好的插件比如mysqlli那么新程序的开发者当然就不会用旧的喽。