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<?php $mock = [ 'foo' => null ]; foreach ($mock as &$item) { $item = 'foo'; } $mockCopy = $mock; $mockCopy['foo_copy'] = $mock['foo']; $mockCopy['foo'] = 'bar'; var_dump($mock['foo']);
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
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 5
filename:       /in/VLuhn
function name:  (null)
number of ops:  17
compiled vars:  !0 = $mock, !1 = $item, !2 = $mockCopy
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, <array>
    5     1      > FE_RESET_RW                                      $4      !0, ->5
          2    > > FE_FETCH_RW                                              $4, !1, ->5
    6     3    >   ASSIGN                                                   !1, 'foo'
    5     4      > JMP                                                      ->2
          5    >   FE_FREE                                                  $4
    9     6        ASSIGN                                                   !2, !0
   10     7        FETCH_DIM_R                                      ~8      !0, 'foo'
          8        ASSIGN_DIM                                               !2, 'foo_copy'
          9        OP_DATA                                                  ~8
   11    10        ASSIGN_DIM                                               !2, 'foo'
         11        OP_DATA                                                  'bar'
   13    12        INIT_FCALL                                               'var_dump'
         13        FETCH_DIM_R                                      ~10     !0, 'foo'
         14        SEND_VAL                                                 ~10
         15        DO_ICALL                                                 
         16      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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