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

Generated using Vulcan Logic Dumper, using php 8.0.0


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