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<?php $a = ['a' => 'a', 'b' => 'b']; foreach ($a as &$value) { $value = 'C'; } $value = 'D'; //$value is still bound by-reference echo 'Unintended Results: ' . PHP_EOL; var_dump($a); echo PHP_EOL; $a = ['a' => 'a', 'b' => 'b']; foreach ($a as &$value) { $value = 'C'; } unset($value); $value = 'D'; echo 'Expected Results: ' . PHP_EOL; var_dump($a);
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 125) Position 1 = 2, Position 2 = 5
Branch analysis from position: 2
2 jumps found. (Code = 126) Position 1 = 3, Position 2 = 5
Branch analysis from position: 3
1 jumps found. (Code = 42) Position 1 = 2
Branch analysis from position: 2
Branch analysis from position: 5
2 jumps found. (Code = 125) Position 1 = 14, Position 2 = 17
Branch analysis from position: 14
2 jumps found. (Code = 126) Position 1 = 15, Position 2 = 17
Branch analysis from position: 15
1 jumps found. (Code = 42) Position 1 = 14
Branch analysis from position: 14
Branch analysis from position: 17
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 17
Branch analysis from position: 5
filename:       /in/2V2AQ
function name:  (null)
number of ops:  25
compiled vars:  !0 = $a, !1 = $value
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                       !0, <array>
    5     1      > FE_RESET_RW                                          $3      !0, ->5
          2    > > FE_FETCH_RW                                                  $3, !1, ->5
    6     3    >   ASSIGN                                                       !1, 'C'
    5     4      > JMP                                                          ->2
          5    >   FE_FREE                                                      $3
    8     6        ASSIGN                                                       !1, 'D'
    9     7        ECHO                                                         'Unintended+Results%3A+%0A'
   10     8        INIT_FCALL                                                   'var_dump'
          9        SEND_VAR                                                     !0
         10        DO_ICALL                                                     
   12    11        ECHO                                                         '%0A'
   13    12        ASSIGN                                                       !0, <array>
   14    13      > FE_RESET_RW                                          $8      !0, ->17
         14    > > FE_FETCH_RW                                                  $8, !1, ->17
   15    15    >   ASSIGN                                                       !1, 'C'
   14    16      > JMP                                                          ->14
         17    >   FE_FREE                                                      $8
   17    18        UNSET_CV                                                     !1
   18    19        ASSIGN                                                       !1, 'D'
   19    20        ECHO                                                         'Expected+Results%3A+%0A'
   20    21        INIT_FCALL                                                   'var_dump'
         22        SEND_VAR                                                     !0
         23        DO_ICALL                                                     
         24      > RETURN                                                       1

Generated using Vulcan Logic Dumper, using php 8.5.0


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