How to treat the most stupid thing in PHP

gistfile1.aw

<?php
// Assume this function definition:

function foo($bar, $baz = 'qux') {
   return $bar.$baz;
}

// Oh crap, something went wrong, and we call it without arguments:

$foo = foo(); 
// Produces:
// PHP Warning:  Missing argument 1 for foo() bla bla bla
// PHP Notice:  Undefined variable: bar in bla bla bla

// And script doesn't terminate. That's really stupid.
// Here is a simple solution:

set_error_handler(function($errno, $errstr) { 
                     if (preg_match('/Missing argument/', $errstr)==1) 
                        trigger_error('Missing argument causes fatal error, mothafucka!', E_USER_ERROR); 
                  }, E_WARNING);

$foo = foo();
// PHP Fatal error:  Missing argument causes fatal error, mothafucka! in bla bla bla

?>