PHP Multidimensional Array Internal merge

array(3) {  [0] => array(9) {    [0] => string(1) "1"    [1] => string(3) "175"    [2] => string(1) "2"    [3] => string(2) "22"    [4] => string(2) "22"    [5] => string(2) "-1"    [6] => string(1) "0"    [7] => string(11) "小份+0元"    [8] => int(44)  }  [1] => array(9) {    [0] => string(1) "1"    [1] => string(3) "175"    [2] => string(1) "3"    [3] => string(2) "22"    [4] => string(2) "22"    [5] => string(2) "-1"    [6] => string(1) "0"    [7] => string(11) "小份+0元"    [8] => int(66)  }  [3] => array(9) {    [0] => string(1) "1"    [1] => string(3) "175"    [2] => string(1) "2"    [3] => string(2) "22"    [4] => string(2) "22"    [5] => string(2) "-1"    [6] => string(1) "0"    [7] => string(11) "小份+0元"    [8] => int(44)  }}

How do I merge the same one-dimensional array
And if both of the values of [2] and the value of string (1) "2" are added as new values. The key does not change

Reply content:

array(3) {  [0] => array(9) {    [0] => string(1) "1"    [1] => string(3) "175"    [2] => string(1) "2"    [3] => string(2) "22"    [4] => string(2) "22"    [5] => string(2) "-1"    [6] => string(1) "0"    [7] => string(11) "小份+0元"    [8] => int(44)  }  [1] => array(9) {    [0] => string(1) "1"    [1] => string(3) "175"    [2] => string(1) "3"    [3] => string(2) "22"    [4] => string(2) "22"    [5] => string(2) "-1"    [6] => string(1) "0"    [7] => string(11) "小份+0元"    [8] => int(66)  }  [3] => array(9) {    [0] => string(1) "1"    [1] => string(3) "175"    [2] => string(1) "2"    [3] => string(2) "22"    [4] => string(2) "22"    [5] => string(2) "-1"    [6] => string(1) "0"    [7] => string(11) "小份+0元"    [8] => int(44)  }}

How do I merge the same one-dimensional array
And if both of the values of [2] and the value of string (1) "2" are added as new values. The key does not change

