array(2) {
  [0]=>
  int(2)
  [1]=>
  int(1)
}

How to assemble the above array into the following array corresponding to the value [0]=>
int(2) [1]=>
int(1) as a column of g_num

Assemble arrays in sequence

array(2) {
  [0]=>
  array(14) {
    ["id"]=>
    string(1) "7"
    ["m_id"]=>
    string(1) "1"
    ["g_name"]=>
    string(6) "苹果"
   
  }
  [1]=>
  array(14) {
    ["id"]=>
    string(1) "8"
    ["m_id"]=>
    string(1) "1"
    ["g_name"]=>
    string(6) "梨子"
    
  }
}

After the transformation, it looks like this. Thank you, God

array(2) {
  [0]=>
  array(14) {
    ["id"]=>
    string(1) "7"
    ["m_id"]=>
    string(1) "1"
    ["g_name"]=>
    string(6) "苹果"
    ["g_num"]=>
    string(1) "2"
  }
  [1]=>
  array(14) {
    ["id"]=>
    string(1) "8"
    ["m_id"]=>
    string(1) "1"
    ["g_name"]=>
    string(6) "梨子"
    ["g_num"]=>
    string(1) "1"
  }
}