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<?php var_dump(isset($someVar)); $anotherVar = null; var_dump(isset($anotherVar)); $thirdVar = false; var_dump(isset($thirdVar));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/JVc81
function name:  (null)
number of ops:  15
compiled vars:  !0 = $someVar, !1 = $anotherVar, !2 = $thirdVar
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   INIT_FCALL                                               'var_dump'
          1        ISSET_ISEMPTY_CV                                 ~3      !0
          2        SEND_VAL                                                 ~3
          3        DO_ICALL                                                 
    5     4        ASSIGN                                                   !1, null
    6     5        INIT_FCALL                                               'var_dump'
          6        ISSET_ISEMPTY_CV                                 ~6      !1
          7        SEND_VAL                                                 ~6
          8        DO_ICALL                                                 
    8     9        ASSIGN                                                   !2, <false>
    9    10        INIT_FCALL                                               'var_dump'
         11        ISSET_ISEMPTY_CV                                 ~9      !2
         12        SEND_VAL                                                 ~9
         13        DO_ICALL                                                 
         14      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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