exec

(PHP 4, PHP 5, PHP 7)

exec — 执锟斤拷一锟斤拷锟解部锟斤拷锟斤拷

说锟斤拷

exec ( string $command [, array &$output [, int &$return_var ]] ) : string

exec() 执锟斤拷 command 锟斤拷锟斤拷锟斤拷指锟斤拷锟斤拷锟斤拷锟筋。

锟斤拷锟斤拷

command

要执锟叫碉拷锟斤拷锟筋。

output

锟斤拷锟斤拷峁╋拷锟� output 锟斤拷锟斤拷锟斤拷 锟斤拷么锟斤拷锟斤拷锟斤拷锟斤拷执锟叫碉拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷椋� 每锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟叫碉拷一锟斤拷元锟截★拷 锟斤拷锟斤拷锟叫碉拷锟斤拷锟捷诧拷锟斤拷锟斤拷锟斤拷尾锟侥空帮拷锟街凤拷锟斤拷锟斤拷锟斤拷 \n 锟街凤拷锟斤拷 锟斤拷注锟解，锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷丫锟斤拷锟斤拷锟斤拷瞬锟斤拷锟皆拷兀锟�exec() 锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷末尾追锟斤拷锟斤拷锟捷★拷锟斤拷锟斤拷悴伙拷锟斤拷锟斤拷锟斤拷锟侥┪诧拷锟斤拷锟阶凤拷樱锟� 锟斤拷锟节达拷锟斤拷 exec() 锟斤拷锟斤拷之前 锟斤拷锟斤拷锟斤拷使锟斤拷 unset() 锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟矫★拷

return_var

锟斤拷锟酵憋拷峁� output 锟斤拷 return_var 锟斤拷锟斤拷锟斤拷 锟斤拷锟斤拷执锟叫猴拷姆锟斤拷锟阶刺拷岜恍达拷氲斤拷吮锟斤拷锟斤拷锟�

锟斤拷锟斤拷值

锟斤拷锟斤拷执锟叫斤拷锟斤拷锟斤拷锟斤拷一锟斤拷锟斤拷锟捷★拷 锟斤拷锟斤拷锟斤拷锟揭拷锟饺∥达拷锟斤拷锟斤拷锟斤拷全锟斤拷锟斤拷锟斤拷锟斤拷荩锟� 锟斤拷使锟斤拷 passthru() 锟斤拷锟斤拷锟斤拷

锟斤拷锟斤拷锟揭拷锟饺★拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷荩锟� 锟斤拷确锟斤拷使锟斤拷 output 锟斤拷锟斤拷锟斤拷

锟斤拷锟斤拷

Example #1 exec() 锟斤拷锟斤拷

<?php
// 锟斤拷锟斤拷锟斤拷锟斤拷械锟� php/httpd 锟斤拷锟教的达拷锟斤拷锟斤拷锟矫伙拷锟斤拷
// 锟斤拷锟节匡拷锟斤拷执锟斤拷 "whoami" 锟斤拷锟斤拷锟较低筹拷希锟�
echo exec('whoami');
?>

注锟斤拷

Warning

锟斤拷锟矫伙拷锟结供锟斤拷锟斤拷锟捷达拷锟斤拷撕锟斤拷锟斤拷锟绞癸拷锟� escapeshellarg() 锟斤拷 escapeshellcmd() 锟斤拷确锟斤拷锟矫伙拷锟斤拷骗系统锟接讹拷执锟斤拷锟斤拷锟斤拷锟斤拷锟筋。

Note:

锟斤拷纬锟斤拷锟绞癸拷么撕锟斤拷锟斤拷锟斤拷锟斤拷锟轿拷锟斤拷鼙锟斤拷锟斤拷诤锟教拷锟斤拷校锟斤拷顺锟斤拷锟斤拷锟诫将锟斤拷锟斤拷囟锟斤拷锟斤拷募锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷岬硷拷锟� PHP 锟斤拷锟斤拷直锟斤拷锟斤拷锟斤拷执锟叫斤拷锟斤拷锟斤拷

Note:

On Windows exec() will first start cmd.exe to launch the command. If you want to start an external program without starting cmd.exe use proc_open() with the bypass_shell option set.

Note: 锟斤拷全模式 锟斤拷锟斤拷时锟斤拷锟缴斤拷锟斤拷锟斤拷 safe_mode_exec_dir 执锟斤拷锟侥硷拷锟斤拷实锟斤拷锟较ｏ拷锟斤拷锟节诧拷锟斤拷锟斤拷锟节碉拷锟斤拷执锟叫碉拷路锟斤拷锟叫达拷锟斤拷 .. 锟斤拷锟斤拷锟�

Warning

锟斤拷全模式 锟斤拷锟斤拷时锟斤拷锟斤拷锟斤拷锟街凤拷锟斤拷锟结被 escapeshellcmd() 转锟斤拷锟斤拷锟斤拷耍锟�echo y | echo x 锟斤拷锟斤拷 echo y \| echo x锟斤拷

锟轿硷拷