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<?php $a = [ ['a'=>'bla'], ['b'=>'test'], ['a'=>'foo'], ['c'=>'bar'] ]; $b = []; foreach ($a as $v) { $k = array_key_first($v); $b[$k][] = $v[$k]; } var_dump($b);
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 77) Position 1 = 3, Position 2 = 13
Branch analysis from position: 3
2 jumps found. (Code = 78) Position 1 = 4, Position 2 = 13
Branch analysis from position: 4
1 jumps found. (Code = 42) Position 1 = 3
Branch analysis from position: 3
Branch analysis from position: 13
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 13
filename:       /in/Eo1f9
function name:  (null)
number of ops:  18
compiled vars:  !0 = $a, !1 = $b, !2 = $v, !3 = $k
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, <array>
    8     1        ASSIGN                                                   !1, <array>
    9     2      > FE_RESET_R                                       $6      !0, ->13
          3    > > FE_FETCH_R                                               $6, !2, ->13
   10     4    >   INIT_FCALL                                               'array_key_first'
          5        SEND_VAR                                                 !2
          6        DO_ICALL                                         $7      
          7        ASSIGN                                                   !3, $7
   11     8        FETCH_DIM_R                                      ~11     !2, !3
          9        FETCH_DIM_W                                      $9      !1, !3
         10        ASSIGN_DIM                                               $9
         11        OP_DATA                                                  ~11
    9    12      > JMP                                                      ->3
         13    >   FE_FREE                                                  $6
   13    14        INIT_FCALL                                               'var_dump'
         15        SEND_VAR                                                 !1
         16        DO_ICALL                                                 
         17      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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