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<?php $contacts = []; $contacts[0] = []; $contacts[1] = []; $contacts[2] = []; $contacts[0][] = 2; $contacts[1][] = 6; $contacts[2][] = 3; $contacts[0][] = 'Bldo'; $contacts[1][] = 'Cldo'; $contacts[2][] = 'Aldo'; $keys = array_column($contacts, 1); array_multisort($keys, SORT_ASC, $contacts); print_r($contacts);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/YVhPU
function name:  (null)
number of ops:  39
compiled vars:  !0 = $contacts, !1 = $keys
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                       !0, <array>
    4     1        ASSIGN_DIM                                                   !0, 0
          2        OP_DATA                                                      <array>
    5     3        ASSIGN_DIM                                                   !0, 1
          4        OP_DATA                                                      <array>
    6     5        ASSIGN_DIM                                                   !0, 2
          6        OP_DATA                                                      <array>
    8     7        FETCH_DIM_W                                          $6      !0, 0
          8        ASSIGN_DIM                                                   $6
          9        OP_DATA                                                      2
    9    10        FETCH_DIM_W                                          $8      !0, 1
         11        ASSIGN_DIM                                                   $8
         12        OP_DATA                                                      6
   10    13        FETCH_DIM_W                                          $10     !0, 2
         14        ASSIGN_DIM                                                   $10
         15        OP_DATA                                                      3
   12    16        FETCH_DIM_W                                          $12     !0, 0
         17        ASSIGN_DIM                                                   $12
         18        OP_DATA                                                      'Bldo'
   13    19        FETCH_DIM_W                                          $14     !0, 1
         20        ASSIGN_DIM                                                   $14
         21        OP_DATA                                                      'Cldo'
   14    22        FETCH_DIM_W                                          $16     !0, 2
         23        ASSIGN_DIM                                                   $16
         24        OP_DATA                                                      'Aldo'
   17    25        INIT_FCALL                                                   'array_column'
         26        SEND_VAR                                                     !0
         27        SEND_VAL                                                     1
         28        DO_ICALL                                             $18     
         29        ASSIGN                                                       !1, $18
   19    30        INIT_FCALL                                                   'array_multisort'
         31        SEND_REF                                                     !1
         32        SEND_VAL                                                     4
         33        SEND_REF                                                     !0
         34        DO_ICALL                                                     
   21    35        INIT_FCALL                                                   'print_r'
         36        SEND_VAR                                                     !0
         37        DO_ICALL                                                     
         38      > RETURN                                                       1

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