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<?php $data = [[2,1], [1,2], [1,2], [2,1], [2,3], [3,2], [4,5]]; array_walk($data, 'sort'); $data = array_unique($data, SORT_REGULAR); var_dump($data);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/A1gkX
function name:  (null)
number of ops:  14
compiled vars:  !0 = $data
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                       !0, <array>
    5     1        INIT_FCALL                                                   'array_walk'
          2        SEND_REF                                                     !0
          3        SEND_VAL                                                     'sort'
          4        DO_ICALL                                                     
    6     5        INIT_FCALL                                                   'array_unique'
          6        SEND_VAR                                                     !0
          7        SEND_VAL                                                     0
          8        DO_ICALL                                             $3      
          9        ASSIGN                                                       !0, $3
    8    10        INIT_FCALL                                                   'var_dump'
         11        SEND_VAR                                                     !0
         12        DO_ICALL                                                     
         13      > RETURN                                                       1

Generated using Vulcan Logic Dumper, using php 8.5.0


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