I have a small snippit of code that I believe people would find very useful, however I was unsure as to where to stick it.

function array_multisearch($needle, $haystack, $strict = FALSE) {
	for ($x = 0; $x < count($haystack); $x++) {
		if (array_search($needle, $haystack[$x], $strict)) {return $x;}
	}
}

This function allows for arrays of hash-arrays kind of searching...