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PHP Object-Oriented PHP Basics Building a Collection Creating a Meal Plan

Differences in getCombinedIngredients method from previous video

Am I missing something, or does a chunk of code in the middle of the getCombinedIngredients method in recipecollection.php change from the previous video?

I have this from the previous exercise...

if (substr($item, -1) == "s" && array_key_exists(rtrim($item, "s"), $ingredients)) { $item = rtrim($item, "s"); } else if (array_key_exists($item . "s", $ingredients)) { $item .= "s"; }

whereas in this video it looks as though it's changed to...

if (in_array($item,"s", $ingredients)) { $item.="s"; } else if (in_array(substr($item, 0, -1), $ingredients)) { $item = substr($item, 0, -1); }

I can't see any reference to this change in either video?