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<?php $unique = [null, '', .0, false, null, 0, '0.0', -.1, "\0", false]; $duplicated=array(); foreach($unique as $k=>$v) { if( ($kt=array_search($v,$unique))!==false and $k!=$kt ) { unset($unique[$kt]); $duplicated[]=$v; } } var_export($unique); var_export($duplicated);
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 77) Position 1 = 3, Position 2 = 19
Branch analysis from position: 3
2 jumps found. (Code = 78) Position 1 = 4, Position 2 = 19
Branch analysis from position: 4
2 jumps found. (Code = 46) Position 1 = 12, Position 2 = 14
Branch analysis from position: 12
2 jumps found. (Code = 43) Position 1 = 15, Position 2 = 18
Branch analysis from position: 15
1 jumps found. (Code = 42) Position 1 = 3
Branch analysis from position: 3
Branch analysis from position: 18
Branch analysis from position: 14
Branch analysis from position: 19
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 19
filename:       /in/lU8Tt
function name:  (null)
number of ops:  27
compiled vars:  !0 = $unique, !1 = $duplicated, !2 = $v, !3 = $k, !4 = $kt
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <array>
    5     1        ASSIGN                                                   !1, <array>
    7     2      > FE_RESET_R                                       $7      !0, ->19
          3    > > FE_FETCH_R                                       ~8      $7, !2, ->19
          4    >   ASSIGN                                                   !3, ~8
    9     5        INIT_FCALL                                               'array_search'
          6        SEND_VAR                                                 !2
          7        SEND_VAR                                                 !0
          8        DO_ICALL                                         $10     
          9        ASSIGN                                           ~11     !4, $10
         10        TYPE_CHECK                                  1018  ~12     ~11
         11      > JMPZ_EX                                          ~12     ~12, ->14
         12    >   IS_NOT_EQUAL                                     ~13     !3, !4
         13        BOOL                                             ~12     ~13
         14    > > JMPZ                                                     ~12, ->18
   10    15    >   UNSET_DIM                                                !0, !4
         16        ASSIGN_DIM                                               !1
         17        OP_DATA                                                  !2
    7    18    > > JMP                                                      ->3
         19    >   FE_FREE                                                  $7
   14    20        INIT_FCALL                                               'var_export'
         21        SEND_VAR                                                 !0
         22        DO_ICALL                                                 
   15    23        INIT_FCALL                                               'var_export'
         24        SEND_VAR                                                 !1
         25        DO_ICALL                                                 
         26      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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