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<?php $array_origin = [ [ "id" => 1, "category"=>1 ], [ "id" => 2, "category"=>2 ], ]; $array_origin = array_reduce($array_origin, static function($carry, $item) { $carry[] = $item; if ($item['category'] === 1) { $item['category'] = 2; $carry[] = $item; } return $carry; }, []); var_dump($array_origin);
Output for 7.1.25 - 7.1.33, 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 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.26, 8.4.1 - 8.4.13
array(3) { [0]=> array(2) { ["id"]=> int(1) ["category"]=> int(1) } [1]=> array(2) { ["id"]=> int(1) ["category"]=> int(2) } [2]=> array(2) { ["id"]=> int(2) ["category"]=> int(2) } }
preferences:
180.48 ms | 408 KiB | 5 Q