Boolean Checking Type Against True

[quasiman]

Sorry about the topic title, I'm not really sure how else to simply explain this...

 

Anyway, can someone explain why this doesn't work? I'm checking the type with '===' versus checking value with '=='. I could just use the two ==, but I want to know why...

 

<?php
function validate($value, $type) {
switch ($type) {
 case "url":
	 if (filter_var($value, FILTER_VALIDATE_URL) === TRUE)
		 return TRUE;
	 break;
 default:
	 return FALSE;
}
}

if (validate('http://gmail.com','url')) {
echo 'true';
} else {
echo 'false';
}
?>

[PFMaBiSmAd]

filter_var returns the filtered data, or FALSE if the filter fails. The returned url isn't exactly a bool true type, so the === fails. It is a true using the == comparison.

[quasiman]

Oh you're kidding!? Well ok, that explains it... thanks!