How to check if a shell command exists from PHP

Question

I need something like this in php:

If (!command_exists(\'makemiracle\')) {
  print \'no miracles\';
  return FALSE;
}
else {
  // safely call the command kno         


        

Answer 1

You could use is_executable to check whether it is executable, but you need to know the path of the command, which you could use which command to get it.