Nothing magic here. Be careful with the == comparison operator and its type juggling. If you want to match things precisely, use the === operator. Loose compari

Nothing magic here. Be careful with the == comparison operator and its type juggling. If you want to match things precisely, use the === operator. Loose comparisons can have dangerous side-effects! The MD5 examples are really just cloaked comparisons like this one, later in the list: var_dump('0010e2' == '1e3'); ((10 x 10^2) == (1 * 10^3)) http://php.net/manual/en/language.operators.comparison.php http://php.net/manual/en/language.operators.comparison.php http://php.net/manual/en/types.comparisons.php http://php.net/manual/en/types.comparisons.php