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PHP Build a Basic PHP Website (2018) Listing and Sorting Inventory Items Sorting Array Items

Issue use function asort() in php

I dont know why use asort($output) to more complex

function array_category($catalog,$category){

$output = array();

foreach ($catalog as $id => $item) { if ($category == null OR strtolower($category)==strtolower($item["category"])){ $sort = $item["title"]; $sort = ltrim($sort,"The "); $sort = ltrim($sort,"A "); $sort = ltrim($sort,"An "); $output[$id] = $sort;

}

} asort($output); return array_keys($output); }

?>