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<?php $arr1 = [ 0 => [ 'id' => 1, 'name' => 'Peter', ], 1 => [ 'id' => 2, 'name' => 'John', ] ]; $arr2 = [ 0 => [ 'id' => 1, 'surname' => 'Newman', ], 1 => [ 'id' => 2, 'surname' => 'Cena', ] ]; $finalArr = array_map(function($x) use ($arr2) { foreach($arr2 as $b) { if ($x["id"] === $b["id"]) { return array_merge($x, $b); } } return $x; }, $arr1); var_dump($finalArr);
Output for git.master, git.master_jit, rfc.property-hooks
array(2) { [0]=> array(3) { ["id"]=> int(1) ["name"]=> string(5) "Peter" ["surname"]=> string(6) "Newman" } [1]=> array(3) { ["id"]=> int(2) ["name"]=> string(4) "John" ["surname"]=> string(4) "Cena" } }

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