EXEC (), PassThru ()-There is a problem when invoking the system command

PHP file calls the system command, in the terminal directly execute the PHP file can be executed, in the Web server access to this file is not responding, what is the problem. Permission issues? Or what ...

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PHP file calls the system command, in the terminal directly execute the PHP file can be executed, in the Web server access to this file is not responding, what is the problem. Permission issues? Or what ...

Should be a question of permissions

I just ran into a similar problem, and you said you couldn't execute the ffmpeg command, but I couldn't execute the command that generated the picture.
We are all command line under direct execution can be successful, PHP call is not the case, right. and ordinary commands can be successful.
I think the common denominator of our problem is that we all need to generate files.
In my case, I created a new directory under the Apache Default Web directory, put the PHP file in it, but did not give the directory permission to write, but only the PHP file inside the permissions, and then never find the reason.
Just try to give the entire directory permission to write, you can succeed.
I don't know if you have a similar situation. If not, it could also be a php.ini configuration problem, such as Safe_mode=off not configured.
Hope to help you ~

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