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<?php $a = 8; $a = null; var_dump( isset($a)); $s = new stdClass($z=10); var_dump($s,$z);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/YbVWs
function name:  (null)
number of ops:  16
compiled vars:  !0 = $a, !1 = $s, !2 = $z
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, 8
    3     1        ASSIGN                                                   !0, null
    4     2        INIT_FCALL                                               'var_dump'
          3        ISSET_ISEMPTY_CV                                 ~5      !0
          4        SEND_VAL                                                 ~5
          5        DO_ICALL                                                 
    6     6        NEW                                              $7      'stdClass'
          7        ASSIGN                                           ~8      !2, 10
          8        SEND_VAL_EX                                              ~8
          9        DO_FCALL                                      0          
         10        ASSIGN                                                   !1, $7
    7    11        INIT_FCALL                                               'var_dump'
         12        SEND_VAR                                                 !1
         13        SEND_VAR                                                 !2
         14        DO_ICALL                                                 
         15      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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