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<?php $ary1 = array( array( 'sn' => '123', 'name' => 'whatever', ), array( 'sn' => '234', 'name' => 'whatever', ), ); $ary2 = array( array( 'sn' => '123', 'gender' => 'male', ), array( 'sn' => '234', 'gender' => 'female', ), ); $res = []; foreach (array_merge($ary1, $ary2) as $a) { $res[$a['sn']] = array_merge($res[$a['sn']] ?? $a, $a); } var_dump($res);
Output for git.master, git.master_jit, rfc.property-hooks
array(2) { [123]=> array(3) { ["sn"]=> string(3) "123" ["name"]=> string(8) "whatever" ["gender"]=> string(4) "male" } [234]=> array(3) { ["sn"]=> string(3) "234" ["name"]=> string(8) "whatever" ["gender"]=> string(6) "female" } }

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