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<?php $array = [ ['group' => 'A', 'A' => 1, 'B' => 2,], ['group' => 'B', 'A' => 3, 'B' => 4,], ['group' => 'A', 'A' => 5, 'B' => 6,], ['group' => 'B', 'A' => 7, 'B' => 8,] ]; $result = []; foreach ($array as ['group' => $group, $group => $result[$group][]]); var_export($result);
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 77) Position 1 = 3, Position 2 = 12
Branch analysis from position: 3
2 jumps found. (Code = 78) Position 1 = 4, Position 2 = 12
Branch analysis from position: 4
1 jumps found. (Code = 42) Position 1 = 3
Branch analysis from position: 3
Branch analysis from position: 12
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 12
filename:       /in/JqTGG
function name:  (null)
number of ops:  17
compiled vars:  !0 = $array, !1 = $result, !2 = $group
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <array>
    9     1        ASSIGN                                                   !1, <array>
   10     2      > FE_RESET_R                                       $5      !0, ->12
          3    > > FE_FETCH_R                                               $5, $6, ->12
          4    >   FETCH_LIST_R                                     $7      $6, 'group'
          5        ASSIGN                                                   !2, $7
          6        FETCH_LIST_R                                     $9      $6, !2
          7        FETCH_DIM_W                                      $10     !1, !2
          8        ASSIGN_DIM                                               $10
          9        OP_DATA                                                  $9
         10        FREE                                                     $6
         11      > JMP                                                      ->3
         12    >   FE_FREE                                                  $5
   11    13        INIT_FCALL                                               'var_export'
         14        SEND_VAR                                                 !1
         15        DO_ICALL                                                 
         16      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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