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下载YUM源 http://dl.fedoraproject.org/pub/epel/7/x86_64/e/epel-release-7-5.noarch.rpm 然后安装 rpm -ivh epel-release-7-5.noarch.rpm 再然后：yum install php-mcrypt 就可以了。记得重启PHP相关的服务，我用的是PHP-FPM和NGINX，重启一下就搞定

Administrator@USER-20140115FZ /cygdrive/d/wamp/bin/apache/apache2.4.9/bin$ ./ab -c10 -n100 http://flxx2/This is ApacheBench, Version 2.3 <$Revision: 1554214 $>Copyright 1996 Adam Twiss, Zeus Tec...