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run code in 150+ php & hhvm versions
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<?php $array1 = array( 'type' => 1, 'values' => array( 'name' => 'Ingo Petent', 'city' => 'Fooheim', 'age' => 45, ), ); $array2 = array( 'type' => 2, 'values' => array( 'name' => 'New Name', 'city' => 'New city', 'age' => 30, ), ); var_dump(array_merge_recursive($array1, $array2));
Output for 4.3.0 - 7.1.0
array(2) { ["type"]=> array(2) { [0]=> int(1) [1]=> int(2) } ["values"]=> array(3) { ["name"]=> array(2) { [0]=> string(11) "Ingo Petent" [1]=> string(8) "New Name" } ["city"]=> array(2) { [0]=> string(7) "Fooheim" [1]=> string(8) "New city" } ["age"]=> array(2) { [0]=> int(45) [1]=> int(30) } } }