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<?php $a = 1; /* global scope */ function test() { var_dump($a); /* reference to local scope variable */ } test(); ?>
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/g4XuQ
function name:  (null)
number of ops:  4
compiled vars:  !0 = $a
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, 1
    9     1        INIT_FCALL                                               'test'
          2        DO_FCALL                                      0          
   10     3      > RETURN                                                   1

Function test:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/g4XuQ
function name:  test
number of ops:  4
compiled vars:  !0 = $a
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    6     0  E >   INIT_FCALL                                               'var_dump'
          1        SEND_VAR                                                 !0
          2        DO_ICALL                                                 
    7     3      > RETURN                                                   null

End of function test

Generated using Vulcan Logic Dumper, using php 8.0.0


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