PHP type matching

Question

In PHP, can someone explain to me why this resolves to true:

'NONE' == 0

Answer 1

Because any non-numerical string cast to int will turn into 0.

If you don't want that to happen, use ===, the identical operator.

Read:
http://php.net/manual/en/language.operators.comparison.php
http://php.net/manual/en/types.comparisons.php