研究得出结论，为php.ini的锅编辑php.ini（lnmp或lnmpa的默认php.ini路径为/usr/local/php/etc/php.ini） 找到disable_functions =字段 将原本的: disable_functions = passthru,exec,system,chroot,scandir,chgrp,chown,shell_exec,proc_open,proc_get_status,popen,ini_alter,ini_restore,dl,openlog,syslog,readlink,symlink,popepassthru,stream_socket_server 改成: disable_functions = passthru,exec,system,shell_exec,proc_open,popen 然后重启: 我是lnmp.org所以直接lnmp restart就好.