php优化 之opcache开启和关闭

查看opcache状态

php -i |grep opcache

// 结果如下，可以看出opcache.enable => On，处于开启状态
Configure Command => ‘./configure’ ‘–prefix=/usr/local/php-fpm’ ‘–with-config-file-path=/usr/local/php-fpm/etc’ ‘–with-config-file-scan-dir=/usr/local/php-fpm/etc/conf.d’ ‘–enable-opcache’ ‘–enable-fpm’ ‘–enable-calendar’ ‘–enable-ftp’ ‘–with-gmp’ ‘–with-openssl’ ‘–enable-pcntl’ ‘–enable-shmop’ ‘–enable-sysvmsg’ ‘–enable-sysvsem’ ‘–enable-wddx’ ‘–with-xsl’ ‘–enable-bcmath’ ‘–with-libxml-dir’ ‘–enable-mbstring’ ‘–enable-sockets’ ‘–enable-zip’ ‘–with-zlib’ ‘–with-mcrypt’ ‘–enable-exif’ ‘–with-curl’ ‘–enable-mysqlnd’ ‘–with-pdo-mysql=mysqlnd’ ‘–with-mysqli=mysqlnd’ ‘–with-mysql=mysqlnd’ ‘–with-gd’ ‘–with-vpx-dir’ ‘–with-jpeg-dir’ ‘–with-png-dir’ ‘–with-zlib-dir’ ‘–with-tidy’ ‘–with-xpm-dir’ ‘–with-freetype-dir’ ‘–enable-gd-native-ttf’ ‘–with-gettext’ ‘–with-bz2’
/usr/local/php-fpm/etc/conf.d/opcache.ini,
opcache.blacklist_filename => no value => no value
opcache.consistency_checks => 0 => 0
opcache.dups_fix => Off => Off
opcache.enable => On => On
opcache.enable_cli => Off => Off
opcache.enable_file_override => Off => Off
关闭opcache

1. 打开opcache配置文件，如上：
   vi /usr/local/php-fpm/etc/conf.d/opcache.ini

2. 注释掉
   ;zend_extension=opcache.so
   ;opcache.enable=1
   ;opcache.enable_cli=0 //disable php_cli
   ;opcache.memory_consumption=256 //共享内存大小, 这个根据你们的需求可调
   ;opcache.interned_strings_buffer=16 //interned string的内存大小, 也可调
   ;opcache.max_accelerated_files=40000 //最大缓存的文件数目
   ;opcache.revalidate_freq=60 //60s检查一次文件更新
   ;opcache.fast_shutdown=1
   ;opcache.save_comments=0 //不保存文件/函数的注释

3. 重启PHP
   /etc/init.d/php-fpm reload