php 运行pear时 报php_mbstring的错的解决
把php.ini中
extension=php_mbstring.dll
; Windows Extensions的下方就行了，就是位置往上移动一下而已。
PHP Startup: Unable to load dynamic library 'D:\\Program Files\\AppServ\\php5\\ext\\php_exif.dll' - 此错也是因为未先加载php_mbstring.dll才导致的。调下位置一切都解决！当然要重启下apache
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