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<?php $result = []; $compare_arr = [ ["venue1" => 1, "venue2" => 2], ["venue1" => 3, "venue2" => 4], ["venue1" => 2, "venue2" => 1], ["venue1" => 5, "venue2" => 6], ["venue1" => 7, "venue2" => 7], ["venue1" => 7, "venue2" => 7], ["venue1" => 7, "venue2" => 7], ["venue1" => 2, "venue2" => 1], ["venue1" => 2, "venue2" => 1], ["venue1" => 99, "venue2" => 200], ["venue1" => 200, "venue2" => 99], ]; foreach ($compare_arr as $v1) { sort($v1); $cKey = $v1[0] .'-'. $v1[1]; if (array_key_exists($cKey, $result)) { continue; } $result[$cKey] = $v1; } print_r($result);
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 77) Position 1 = 3, Position 2 = 18
Branch analysis from position: 3
2 jumps found. (Code = 78) Position 1 = 4, Position 2 = 18
Branch analysis from position: 4
2 jumps found. (Code = 43) Position 1 = 14, Position 2 = 15
Branch analysis from position: 14
1 jumps found. (Code = 42) Position 1 = 3
Branch analysis from position: 3
Branch analysis from position: 15
1 jumps found. (Code = 42) Position 1 = 3
Branch analysis from position: 3
Branch analysis from position: 18
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 18
filename:       /in/6F1fl
function name:  (null)
number of ops:  23
compiled vars:  !0 = $result, !1 = $compare_arr, !2 = $v1, !3 = $cKey
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <array>
    4     1        ASSIGN                                                   !1, <array>
   18     2      > FE_RESET_R                                       $6      !1, ->18
          3    > > FE_FETCH_R                                               $6, !2, ->18
   19     4    >   INIT_FCALL                                               'sort'
          5        SEND_REF                                                 !2
          6        DO_ICALL                                                 
   20     7        FETCH_DIM_R                                      ~8      !2, 0
          8        CONCAT                                           ~9      ~8, '-'
          9        FETCH_DIM_R                                      ~10     !2, 1
         10        CONCAT                                           ~11     ~9, ~10
         11        ASSIGN                                                   !3, ~11
   21    12        ARRAY_KEY_EXISTS                                         !3, !0
         13      > JMPZ                                                     ~13, ->15
   22    14    > > JMP                                                      ->3
   24    15    >   ASSIGN_DIM                                               !0, !3
         16        OP_DATA                                                  !2
   18    17      > JMP                                                      ->3
         18    >   FE_FREE                                                  $6
   27    19        INIT_FCALL                                               'print_r'
         20        SEND_VAR                                                 !0
         21        DO_ICALL                                                 
         22      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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