array_values

        $array = [
            '0'     =>      [
                'name'      =>      '111',
                'age'       =>      '2',
                ],
            '1'     =>      [
                'name'      =>      '111',
                'age'       =>      '2',
            ],
            '2'     =>      [
                'name'      =>      '111',
                'age'       =>      '2',
            ],
//            '4'     =>      [
//                'name'      =>      '111',
//                'age'       =>      '2',
//            ],
            '5'     =>      [
                'name'      =>      '111',
                'age'       =>      '2',
            ],
            '6'     =>      [
                'name'      =>      '111',
                'age'       =>      '2',
            ],
        ];

        dump(array_values($array));
        exit;

?

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<pre>array(5) {   [0] => array(2) {     ["name"] => string(3) "111"     ["age"] => string(1) "2"   }   [1] => array(2) {     ["name"] => string(3) "111"     ["age"] => string(1) "2"   }   [2] => array(2) {     ["name"] => string(3) "111"     ["age"] => string(1) "2"   }   [3] => array(2) {     ["name"] => string(3) "111"     ["age"] => string(1) "2"   }   [4] => array(2) {     ["name"] => string(3) "111"     ["age"] => string(1) "2"   } } </pre>