Testing for equality in your PHP script? Take care!

[swguy]

Do you know what this program outputs?

<?php
$i = 0;
$j = 'test string';
if ($i == $j) { 
   echo 'equal';
} else {
   echo 'not equal';
}

This is how PHP works. Complaining is futile, as this developer discovered:
https://bugs.php.net/bug.php?id=39579