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<?php $foo = NULL; dump(isset($foo) === FALSE);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/of2I4
function name:  (null)
number of ops:  7
compiled vars:  !0 = $foo
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, null
    3     1        INIT_FCALL_BY_NAME                                       'dump'
          2        ISSET_ISEMPTY_CV                                 ~2      !0
          3        TYPE_CHECK                                    4  ~3      ~2
          4        SEND_VAL_EX                                              ~3
          5        DO_FCALL                                      0          
          6      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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