Searching in Multidimensional ArraysFor multidimensional arrays, combine array_search with array_column. multi_array_search.php <?php $users = [ ["id" => 1, "name" => "Alice"], ["id" => 2, "name" => "Bob"], ["id" => 3, "name" => "Charlie"] ]; $key = array_search("...
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php function recursive_array_search($needle,$haystack) { foreach($haystack as $key=>$value) { $current_key=$key; if($needle===$value OR (is_array($value) && recursive_array_search($needle,$value) !== false)) { return $current_key; } } return false; } ?> $search1 = 'demo';...