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<?php var_dump($foo = null, $foo === null, isset($foo));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/dOa7R
function name:  (null)
number of ops:  9
compiled vars:  !0 = $foo
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   INIT_FCALL                                               'var_dump'
          1        ASSIGN                                           ~1      !0, null
          2        SEND_VAL                                                 ~1
          3        TYPE_CHECK                                    2  ~2      !0
          4        SEND_VAL                                                 ~2
          5        ISSET_ISEMPTY_CV                                 ~3      !0
          6        SEND_VAL                                                 ~3
          7        DO_ICALL                                                 
          8      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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