需要关注的一些函数
disable_functions = exec,system,passthru,error_log,ini_alter,dl,openlog,syslog,readlink,symlink,link,leak,fsockopen,proc_open,popepassthru,chroot,scandir,chgrp,chown,escapeshellcmd,escapeshellarg,shell_exec,proc_get_status,popen,com
尽量能找出最关键的几个来.
disable_functions = system,passthru,shell_exec,exec
