Since it may not be obvious to some people, please note that there is another possible return value for this function.
strcmp() will return NULL on failure.
This has the side effect of equating to a match when using an equals comparison (==).
Instead, you may wish to test matches using the identical comparison (===), which should not catch a NULL return.
---------------------
Example
---------------------
$variable1 = array();
$ans === strcmp($variable1, $variable2);
This will stop $ans from returning a match;
Please use strcmp() carefully when comparing user input, as this may have potential security implications in your code.
