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<?php function test($test){ echo isset($test); } test(null); ?>
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/PdJN8
function name:  (null)
number of ops:  4
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    5     0  E >   INIT_FCALL                                               'test'
          1        SEND_VAL                                                 null
          2        DO_FCALL                                      0          
    6     3      > RETURN                                                   1

Function test:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/PdJN8
function name:  test
number of ops:  4
compiled vars:  !0 = $test
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   RECV                                             !0      
    3     1        ISSET_ISEMPTY_CV                                 ~1      !0
          2        ECHO                                                     ~1
    4     3      > RETURN                                                   null

End of function test

Generated using Vulcan Logic Dumper, using php 8.0.0


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