配置指令如下：

[opcache]zend_extension=opcache.soopcache.enable_cli=1;共享内存大小, 这个根据你们的需求可调opcache.memory_consumption=256 ;interned string的内存大小, 也可调opcache.interned_strings_buffer=8;最大缓存的文件数目opcache.max_accelerated_files=4000;60s检查一次文件更新opcache.revalidate_freq=60;打开快速关闭, 打开这个在PHP Request Shutdown的时候 会收内存的速度会提高opcache.fast_shutdown=1;不保存文件/函数的注释opcache.save_comments=0

实际性能对比：

下面是实际测试中没有开启opcache的数据：

[root@localhost ~]# ab -n 10000 -c 200 "http://112.126.69.14/main.php?a=Role&m=createRole"This is ApacheBench, Version 2.3 <$Revision: 655654 $>Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://plete requests: 10000Failed requests: 0Write errors: 0Total transferred: 1711710 bytesHTML transferred: 20020 bytesRequests per second: 702.40 [#/sec] (mean)Time per request: 284.739 [ms] (mean)Time per request: 1.424 [ms] (mean, across all concurrent requests)Transfer rate: 117.41 [Kbytes/sec] receivedConnection Times (ms) min mean[+/-sd] median maxConnect: 2 66 272.6 2 3005Processing: 4 176 666.4 6 9026Waiting: 4 163 642.8 6 9026Total: 6 242 745.7 9 10028Percentage of the requests served within a certain time (ms) 50% 9 66% 14 75% 99 80% 122 90% 1006 95% 1476 98% 2853 99% 3543 100% 10028 (longest request)

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