PHP detect if shell_exec() command failed

Question

I\'m running the ffmpeg command within PHP\'s shell_exec() to convert several videos in a list. Is there anyway to detect if an error happened while the video was being conv

Answer 1

Capture the exit code with another system call function like exec:

exec('ffmpeg ...', $output, $return);

if ($return != 0) {
    // an error occurred
}

Any decent utility will exit with a code other than 0 on error.