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<?php $arr = array( 2 => 'John', 21 => 'John', 32 => 'Joe', 42 => 'John', 23 => 'Joe', 62 => 'John', 25 => 'Joe', ); $flipped = []; foreach($arr AS $key => $value) { $flipped[$value][] = $key; } print_r($flipped);
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 77) Position 1 = 3, Position 2 = 9
Branch analysis from position: 3
2 jumps found. (Code = 78) Position 1 = 4, Position 2 = 9
Branch analysis from position: 4
1 jumps found. (Code = 42) Position 1 = 3
Branch analysis from position: 3
Branch analysis from position: 9
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 9
filename:       /in/aA826
function name:  (null)
number of ops:  14
compiled vars:  !0 = $arr, !1 = $flipped, !2 = $value, !3 = $key
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <array>
   13     1        ASSIGN                                                   !1, <array>
   14     2      > FE_RESET_R                                       $6      !0, ->9
          3    > > FE_FETCH_R                                       ~7      $6, !2, ->9
          4    >   ASSIGN                                                   !3, ~7
   15     5        FETCH_DIM_W                                      $9      !1, !2
          6        ASSIGN_DIM                                               $9
          7        OP_DATA                                                  !3
   14     8      > JMP                                                      ->3
          9    >   FE_FREE                                                  $6
   18    10        INIT_FCALL                                               'print_r'
         11        SEND_VAR                                                 !1
         12        DO_ICALL                                                 
         13      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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