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<?php function foo() { var_dump(isset($GLOBALS['test'])); } function bar() { global $test; var_dump(isset($test)); } foo(); bar(); foo();
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/f4dm2
function name:  (null)
number of ops:  7
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    6     0  E >   INIT_FCALL                                               'foo'
          1        DO_FCALL                                      0          
    7     2        INIT_FCALL                                               'bar'
          3        DO_FCALL                                      0          
    8     4        INIT_FCALL                                               'foo'
          5        DO_FCALL                                      0          
          6      > RETURN                                                   1

Function foo:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/f4dm2
function name:  foo
number of ops:  5
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   INIT_FCALL                                               'var_dump'
          1        ISSET_ISEMPTY_VAR                             2  ~0      'test'
          2        SEND_VAL                                                 ~0
          3        DO_ICALL                                                 
          4      > RETURN                                                   null

End of function foo

Function bar:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/f4dm2
function name:  bar
number of ops:  6
compiled vars:  !0 = $test
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    4     0  E >   BIND_GLOBAL                                              !0, 'test'
          1        INIT_FCALL                                               'var_dump'
          2        ISSET_ISEMPTY_CV                                 ~1      !0
          3        SEND_VAL                                                 ~1
          4        DO_ICALL                                                 
          5      > RETURN                                                   null

End of function bar

Generated using Vulcan Logic Dumper, using php 8.0.0


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