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<?php $ar1 = array("qte_surface" => 310); $ar2 = array("qte_surface" => 500); $result = array_merge_recursive($ar1, $ar2); print_r($result);
Output for 4.3.0 - 7.1.0
Array ( [qte_surface] => Array ( [0] => 310 [1] => 500 ) )