Why cannot I use PHP to call the Docker command?

{Code ...} result {code ...} use php. index. phpsystem (& quot; sudodocker... & quot;) is executable and cannot be executed when accessed using a browser

Result

total 24drwxr-xr-x 2 root root 4096 Jun 23 16:24 .drwxr-xr-x 3 root root 4096 Jun 23 15:30 ..-rw-r--r-- 1 root root    1 Jun 23 15:42 index.html-rw-r--r-- 1 root root  215 Jun 23 16:24 index.php

Use php./index. php
System ("sudo docker...") is executable
You cannot execute the command if you use a browser to access it.

Reply content:

Result

total 24drwxr-xr-x 2 root root 4096 Jun 23 16:24 .drwxr-xr-x 3 root root 4096 Jun 23 15:30 ..-rw-r--r-- 1 root root    1 Jun 23 15:42 index.html-rw-r--r-- 1 root root  215 Jun 23 16:24 index.php

Use php./index. php
System ("sudo docker...") is executable
You cannot execute the command if you use a browser to access it.

It should be caused by insufficient php permissions. you can print out the status code returned after system execution and use the exec command to view the specific returned results.

You are executing www users in the browser. if you use the php command line (php cli) for execution, it is your current user, the current user has the permission to run successfully.

The reason should be that the permission is insufficient, which has been clearly stated upstairs.

The other solution is that php can directly use the Docker Remote API to operate on docker.
See http://www.open-open.com/lib/view/open1419921028828.html