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<?php $array = [ [ 2 => 'kategorie_01', 'tags' => [ 1 => 'tag_01', 2 => 'tag_02', ], ], [ 3 => 'kategorie_02', 'tags' => [ 2 => 'tag_02', ], ], [ 1 => 'Default', 'tags' => [ 1 => 'tag_01', 2 => 'tag_02', ], ], [ 2 => 'kategorie_01', 'tags' => [ 2 => 'tag_02', 3 => 'tag_03', ], ], ]; $result = []; foreach ($array as $set) { foreach ($set as $k => $v) { if ($k !== 'tags') { $cat = $v; if (!isset($ref[$v])) { $ref[$v] = $set; $result[] = &$ref[$v]; } } else { $ref[$cat]['tags'] += $v; } } } var_export($result);
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 77) Position 1 = 3, Position 2 = 26
Branch analysis from position: 3
2 jumps found. (Code = 78) Position 1 = 4, Position 2 = 26
Branch analysis from position: 4
2 jumps found. (Code = 77) Position 1 = 5, Position 2 = 24
Branch analysis from position: 5
2 jumps found. (Code = 78) Position 1 = 6, Position 2 = 24
Branch analysis from position: 6
2 jumps found. (Code = 43) Position 1 = 9, Position 2 = 20
Branch analysis from position: 9
2 jumps found. (Code = 43) Position 1 = 13, Position 2 = 19
Branch analysis from position: 13
1 jumps found. (Code = 42) Position 1 = 23
Branch analysis from position: 23
1 jumps found. (Code = 42) Position 1 = 5
Branch analysis from position: 5
Branch analysis from position: 19
Branch analysis from position: 20
1 jumps found. (Code = 42) Position 1 = 5
Branch analysis from position: 5
Branch analysis from position: 24
1 jumps found. (Code = 42) Position 1 = 3
Branch analysis from position: 3
Branch analysis from position: 24
Branch analysis from position: 26
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 26
filename:       /in/YflAQ
function name:  (null)
number of ops:  31
compiled vars:  !0 = $array, !1 = $result, !2 = $set, !3 = $v, !4 = $k, !5 = $cat, !6 = $ref
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <array>
   33     1        ASSIGN                                                   !1, <array>
   34     2      > FE_RESET_R                                       $9      !0, ->26
          3    > > FE_FETCH_R                                               $9, !2, ->26
   35     4    > > FE_RESET_R                                       $10     !2, ->24
          5    > > FE_FETCH_R                                       ~11     $10, !3, ->24
          6    >   ASSIGN                                                   !4, ~11
   36     7        IS_NOT_IDENTICAL                                         !4, 'tags'
          8      > JMPZ                                                     ~13, ->20
   37     9    >   ASSIGN                                                   !5, !3
   38    10        ISSET_ISEMPTY_DIM_OBJ                         0  ~15     !6, !3
         11        BOOL_NOT                                         ~16     ~15
         12      > JMPZ                                                     ~16, ->19
   39    13    >   ASSIGN_DIM                                               !6, !3
         14        OP_DATA                                                  !2
   40    15        FETCH_DIM_W                                      $19     !6, !3
         16        MAKE_REF                                         $20     $19
         17        FETCH_DIM_W                                      $18     !1
         18        ASSIGN_REF                                               $18, $20
   36    19    > > JMP                                                      ->23
   43    20    >   FETCH_DIM_RW                                     $22     !6, !5
         21        ASSIGN_DIM_OP                +=               1          $22, 'tags'
         22        OP_DATA                                                  !3
   35    23    > > JMP                                                      ->5
         24    >   FE_FREE                                                  $10
   34    25      > JMP                                                      ->3
         26    >   FE_FREE                                                  $9
   47    27        INIT_FCALL                                               'var_export'
         28        SEND_VAR                                                 !1
         29        DO_ICALL                                                 
         30      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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