array_diff

[mpsteel]

This is weird.

I have items in an inventory with images for them on a server. I am trying to list items that have no image. So I am building two arrays and then finding the difference between them.

This works, but is just too slow...

<?
//$images and $items are fine as arrays in themelves

for ($i=0,$n=count($items);$i<$n;$i++){
	$found = false;
	for ($j=0,$m=count($images);$j<$m;$j++){
		if ($items[$i] == $images[$j]) {
			$found = true;
			break;
		}
	}
	if ($found == false) {
		$items_missing_images[] = $diamonds[$i];
	}
}
?>

But if I simply send the two arrays through array_diff then I get an array of the same length (!!!), but many of the items are blank! 😕

What is even weirder is that when I use array_diff to find images with no items it works beautifully. I have all the same code beforehand!

???

Does this make any sense?

Thanks to anyone who decides to help if they can,

-Marc