How can I reliably identify a specific error in PHP?

Question

Because of PHP\'s unlink() not supporting exceptions natively, I\'m making a wrapper function for it. It should throw a FileNotFoundException if, w

Answer 1

While reading trough my old questions I came across the ErrorException, combined with set_error_handler() this would be a automatic Error to Exception transformer for all native PHP errors:

function exception_error_handler($errno, $errstr, $errfile, $errline ) {
    throw new ErrorException($errstr, 0, $errno, $errfile, $errline);
}
set_error_handler("exception_error_handler");

/* Trigger exception */
unlink('Does not exitsts'); 

Can anybody prof this?