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<?php $data = [ ['alteration1', 'alteration4',], ['alteration2','alteration3'], ['alteration2','alteration3'], [] ]; $combinations = [[]]; foreach($data as $index => $current_data){ $current_data = array_unique($current_data); if(empty($current_data)) continue; $temp_combinations = []; foreach($current_data as $value){ foreach($combinations as $each_combination){ $temp_combinations[] = array_merge($each_combination,[$value]); } } $combinations = $temp_combinations; } $set = []; $unique_combinations = []; foreach($combinations as $each_combination){ natsort($each_combination); $serialized_form = implode(",",$each_combination); if(isset($set[$serialized_form])) continue; if(empty($each_combination)) continue; $unique_combinations[] = $each_combination; $set[$serialized_form] = true; } print_r($unique_combinations);
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 77) Position 1 = 3, Position 2 = 30
Branch analysis from position: 3
2 jumps found. (Code = 78) Position 1 = 4, Position 2 = 30
Branch analysis from position: 4
2 jumps found. (Code = 43) Position 1 = 11, Position 2 = 12
Branch analysis from position: 11
1 jumps found. (Code = 42) Position 1 = 3
Branch analysis from position: 3
Branch analysis from position: 12
2 jumps found. (Code = 77) Position 1 = 14, Position 2 = 27
Branch analysis from position: 14
2 jumps found. (Code = 78) Position 1 = 15, Position 2 = 27
Branch analysis from position: 15
2 jumps found. (Code = 77) Position 1 = 16, Position 2 = 25
Branch analysis from position: 16
2 jumps found. (Code = 78) Position 1 = 17, Position 2 = 25
Branch analysis from position: 17
1 jumps found. (Code = 42) Position 1 = 16
Branch analysis from position: 16
Branch analysis from position: 25
1 jumps found. (Code = 42) Position 1 = 14
Branch analysis from position: 14
Branch analysis from position: 25
Branch analysis from position: 27
1 jumps found. (Code = 42) Position 1 = 3
Branch analysis from position: 3
Branch analysis from position: 27
Branch analysis from position: 30
2 jumps found. (Code = 77) Position 1 = 34, Position 2 = 54
Branch analysis from position: 34
2 jumps found. (Code = 78) Position 1 = 35, Position 2 = 54
Branch analysis from position: 35
2 jumps found. (Code = 43) Position 1 = 45, Position 2 = 46
Branch analysis from position: 45
1 jumps found. (Code = 42) Position 1 = 34
Branch analysis from position: 34
Branch analysis from position: 46
2 jumps found. (Code = 43) Position 1 = 48, Position 2 = 49
Branch analysis from position: 48
1 jumps found. (Code = 42) Position 1 = 34
Branch analysis from position: 34
Branch analysis from position: 49
1 jumps found. (Code = 42) Position 1 = 34
Branch analysis from position: 34
Branch analysis from position: 54
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 54
Branch analysis from position: 30
filename:       /in/Do6oH
function name:  (null)
number of ops:  59
compiled vars:  !0 = $data, !1 = $combinations, !2 = $current_data, !3 = $index, !4 = $temp_combinations, !5 = $value, !6 = $each_combination, !7 = $set, !8 = $unique_combinations, !9 = $serialized_form
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <array>
   11     1        ASSIGN                                                   !1, <array>
   13     2      > FE_RESET_R                                       $12     !0, ->30
          3    > > FE_FETCH_R                                       ~13     $12, !2, ->30
          4    >   ASSIGN                                                   !3, ~13
   14     5        INIT_FCALL                                               'array_unique'
          6        SEND_VAR                                                 !2
          7        DO_ICALL                                         $15     
          8        ASSIGN                                                   !2, $15
   15     9        ISSET_ISEMPTY_CV                                         !2
         10      > JMPZ                                                     ~17, ->12
         11    > > JMP                                                      ->3
   16    12    >   ASSIGN                                                   !4, <array>
   17    13      > FE_RESET_R                                       $19     !2, ->27
         14    > > FE_FETCH_R                                               $19, !5, ->27
   18    15    > > FE_RESET_R                                       $20     !1, ->25
         16    > > FE_FETCH_R                                               $20, !6, ->25
   19    17    >   INIT_FCALL                                               'array_merge'
         18        SEND_VAR                                                 !6
         19        INIT_ARRAY                                       ~22     !5
         20        SEND_VAL                                                 ~22
         21        DO_ICALL                                         $23     
         22        ASSIGN_DIM                                               !4
         23        OP_DATA                                                  $23
   18    24      > JMP                                                      ->16
         25    >   FE_FREE                                                  $20
   17    26      > JMP                                                      ->14
         27    >   FE_FREE                                                  $19
   23    28        ASSIGN                                                   !1, !4
   13    29      > JMP                                                      ->3
         30    >   FE_FREE                                                  $12
   27    31        ASSIGN                                                   !7, <array>
   28    32        ASSIGN                                                   !8, <array>
   30    33      > FE_RESET_R                                       $27     !1, ->54
         34    > > FE_FETCH_R                                               $27, !6, ->54
   31    35    >   INIT_FCALL                                               'natsort'
         36        SEND_REF                                                 !6
         37        DO_ICALL                                                 
   32    38        INIT_FCALL                                               'implode'
         39        SEND_VAL                                                 '%2C'
         40        SEND_VAR                                                 !6
         41        DO_ICALL                                         $29     
         42        ASSIGN                                                   !9, $29
   33    43        ISSET_ISEMPTY_DIM_OBJ                         0          !7, !9
         44      > JMPZ                                                     ~31, ->46
         45    > > JMP                                                      ->34
   34    46    >   ISSET_ISEMPTY_CV                                         !6
         47      > JMPZ                                                     ~32, ->49
         48    > > JMP                                                      ->34
   35    49    >   ASSIGN_DIM                                               !8
         50        OP_DATA                                                  !6
   36    51        ASSIGN_DIM                                               !7, !9
         52        OP_DATA                                                  <true>
   30    53      > JMP                                                      ->34
         54    >   FE_FREE                                                  $27
   39    55        INIT_FCALL                                               'print_r'
         56        SEND_VAR                                                 !8
         57        DO_ICALL                                                 
         58      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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188.17 ms | 1400 KiB | 23 Q