Convert string to underscore_name
Converts " Peter's nice car " to "peters_nice_car".
Converts "_88" to "88"
function string_to_underscore_name($string) { $string = preg_replace('/[\'"]/', '', $string); $string = preg_replace('/[^a-zA-Z0-9]+/', '_', $string); $string = trim($string, '_'); $string = strtolower($string); return $string; }