Check if PHP is installed on Apache or IIS Server?

Question

Is there a way to check if PHP is installed on an Apache or IIS server within the PHP environment itself?

If so, how?

Answer 1

I don't know with what PHP version it became available, but try this:

if( strpos( $_SERVER['SERVER_SOFTWARE'], 'Apache') !== false) 
  echo 'Have Apache';
else
  echo 'Have some other server';