ffmpeg查找文件PHP exec

Question

Having no success with ffmpeg. How do i check if a file even exists?

I have the file

$mp3 = $_SERVER['DOCUMENT_ROOT']."/wp-content/youtube_channels/major.mp3";

I've attempted to find the file with exec() but nothing is returned. How do i solve? I'm totally lost.

var_dump(exec("/usr/include/ffmpeg -i $mp3"));

All that is returned string(0) ""

when i check phpinfo ffmpeg is installed and when i type exec("whereis ffmpeg") what is returned is /usr/include/ffmpeg.

I've been stuck on this for 2 days, how do i solve this?

Answer 1

You're looking for file_exists($full_path_to_file)

See file_exists

In your case

if(file_exists($mp3)) {
    //exec....
}

EDIT as per comment below:

Try to output all the lines

$output = [];
exec("/usr/include/ffmpeg -i $mp3 2>&1", $output);

var_dump($output);