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<?php function findKey($array, $keySearch){ $return = ''; foreach ($array as $key => $item) { if ($key == $keySearch) { $return = $item; }else{ if (is_array($item) && findKey($item, $keySearch)) { $return = true; } } } return $return; } $fruits = array ( "frutas" => array ( "a" => "laranja", "b" => "banana", "c" => "maçã", ), "numeros" => array ( "1" => "Um", "2" => "Dois", "3" => "Tres", "4" => "Quatro", "5" => "Cinco", "6" => "Seis" ), ); print_r(findKey($fruits, "a")); ?>
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