没有找到 PHP 扩展 mbstring，而您现在好像在使用多字节字符集。没有 mbstring 扩展的 phpMyAdmin 不能正确分割字符串，可能产生意想不到的结果。
无法加载mcrypt的解决办法
提示：无法加载mcrypt (外链，英语) 扩展，请检查您的 PHP 配置。
在C:\WINDOWS目录下的php.ini文件中，
没有将“;extension=php_mcrypt.dll”中的前面一个“;”去掉
所以不能使用相应功能，解决方法是打开php.ini文件，找到 ;extension=php_mcrypt.dll 改成
extension=php_mcrypt.dll 去掉前面的;使之生效
修改完PHP.INI后要重新启动计算机。。
如果还不行可以在系统的system32（一般为C:\WINDOWS\system32）目录下缺少libmcrypt.dll文件。解决方法是找到php目录下的libmcrypt.dll，将其复制到C:\WINDOWS\system32目录中，然后重新启动IIS.
无法加载mbstring解决方法：
win系统:
打开c:\windows\php.ini
把
;extension=php_mbstring.dll
改成
extension=php_mbstring.dll
unix:
打开/etc/php.ini
把
;extension=php_mbstring.so
改成
extension=php_mbstring.so
可能通过查看phpinfo();来确认php.ini的位置及ＰＨＰ当前支持的一些特性。
服务器设置可能出现的错误，及修改。
PHP设置:屏蔽了一些虽然正规但会有偶然忽然显示出错的代码 error_reporting = E_ALL改为error_reporting = E_ALL & ~E_NOTICE
修改display_errors 值为 off
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