I am requesting that the functions in_array and array_search support an array type for their needle arguments. This feature would allow these functions to search for an array in an array of arrays. 

i.e.
<?

$needle = array(3,4);
$haystack = array( array(1,2), array(3,4), array(5,6) );

if(in_array($needle, $haystack)){
	echo "Yes";
}else{
	echo "No";
}

?>

Outputs:

Warning: Wrong datatype for first argument in call to in_array in test.phtml