PHP Blunder - 1

PHP is one of those most popular web programming languages, but it do have some serious mistakes. Here's one of them.

PHP have a predefined value 'null'. And, it can be compared with numeric values. As anybody else would, you would expect null to have a constant value, right? But that's where PHP have a problem. Look at the code below, and execute it on your system if you want to check.

	<?php
	var_dump(null == 0); // evaluates to true
	var_dump(null < -1); // this also evaluates to true
	// so, how can some predefined value be equal to 0 as well as be less than -1?
	?>

view raw inconsistent_comparison.php hosted with ❤ by GitHub

The null == 0 evaluates to true. So does null < -1. How can some predefined value be equal to 0 and lesser than -1 at the same time?!