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<?php $arr = [ [ 'name_item' => 'Potato', 'size_item' => ['small','medium'] ], [ 'name_item' => 'Apple', 'size_item' => ['small','medium','big'] ], [ 'name_item' => 'Orange', 'size_item' => null ] ]; $arr_new = array_column($arr, "size_item", "name_item"); var_dump($arr_new); $postData = ["Orange",NULL]; $searchRes = isset($arr_new[$postData[0]]) ? (is_array($arr_new[$postData[0]]) ? array_search($postData[1], $arr_new[$postData[0]]) !== false : $arr_new[$postData[0]] === $postData[1]) : false; var_dump($searchRes);
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