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<?php $arr = [ [ 'count_employee' => 2, 'name' => 'Harry' ], [ 'count_employee' => 61, 'name' => 'Jack' ], [ 'count_employee' => 11, 'name' => 'John' ], [ 'count_warehouse' => 1, 'name' => 'Harry' ], [ 'count_warehouse' => 77, 'name' => 'John' ], [ 'count_warehouse' => 45, 'name' => 'Jack' ] ]; $res=[]; array_walk($arr, function($v,$k) use (&$res){ if(array_key_exists($v['name'], $res)) $res[$v['name']]['count_warehouse'] = $v['count_warehouse']; else $res[$v['name']] = $v; }); print_r($res);
Output for 7.1.25 - 7.1.28, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.7
Array ( [Harry] => Array ( [count_employee] => 2 [name] => Harry [count_warehouse] => 1 ) [Jack] => Array ( [count_employee] => 61 [name] => Jack [count_warehouse] => 45 ) [John] => Array ( [count_employee] => 11 [name] => John [count_warehouse] => 77 ) )

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