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<?php $foo = 'bar'; function foo () { global $foo; var_dump($foo); var_dump($GLOBALS['foo']); $foo = 'baz'; var_dump($foo); var_dump($GLOBALS['foo']); } foo(); var_dump($foo); var_dump($GLOBALS['foo']);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/BMBlr
function name:  (null)
number of ops:  12
compiled vars:  !0 = $foo
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, 'bar'
   11     1        INIT_FCALL                                               'foo'
          2        DO_FCALL                                      0          
   12     3        INIT_FCALL                                               'var_dump'
          4        SEND_VAR                                                 !0
          5        DO_ICALL                                                 
   13     6        INIT_FCALL                                               'var_dump'
          7        FETCH_R                      global              ~4      'GLOBALS'
          8        FETCH_DIM_R                                      ~5      ~4, 'foo'
          9        SEND_VAL                                                 ~5
         10        DO_ICALL                                                 
         11      > RETURN                                                   1

Function foo:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/BMBlr
function name:  foo
number of ops:  19
compiled vars:  !0 = $foo
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    4     0  E >   BIND_GLOBAL                                              !0, 'foo'
    5     1        INIT_FCALL                                               'var_dump'
          2        SEND_VAR                                                 !0
          3        DO_ICALL                                                 
    6     4        INIT_FCALL                                               'var_dump'
          5        FETCH_R                      global              ~2      'GLOBALS'
          6        FETCH_DIM_R                                      ~3      ~2, 'foo'
          7        SEND_VAL                                                 ~3
          8        DO_ICALL                                                 
    7     9        ASSIGN                                                   !0, 'baz'
    8    10        INIT_FCALL                                               'var_dump'
         11        SEND_VAR                                                 !0
         12        DO_ICALL                                                 
    9    13        INIT_FCALL                                               'var_dump'
         14        FETCH_R                      global              ~7      'GLOBALS'
         15        FETCH_DIM_R                                      ~8      ~7, 'foo'
         16        SEND_VAL                                                 ~8
         17        DO_ICALL                                                 
   10    18      > RETURN                                                   null

End of function foo

Generated using Vulcan Logic Dumper, using php 8.0.0


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