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<?php $test1 = null; $test2 = false; $test3 = true; var_dump(isset($test1)); var_dump(isset($test2)); var_dump(isset($test3));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/38UCO
function name:  (null)
number of ops:  16
compiled vars:  !0 = $test1, !1 = $test2, !2 = $test3
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, null
    3     1        ASSIGN                                                   !1, <false>
    4     2        ASSIGN                                                   !2, <true>
    5     3        INIT_FCALL                                               'var_dump'
          4        ISSET_ISEMPTY_CV                                 ~6      !0
          5        SEND_VAL                                                 ~6
          6        DO_ICALL                                                 
    6     7        INIT_FCALL                                               'var_dump'
          8        ISSET_ISEMPTY_CV                                 ~8      !1
          9        SEND_VAL                                                 ~8
         10        DO_ICALL                                                 
    7    11        INIT_FCALL                                               'var_dump'
         12        ISSET_ISEMPTY_CV                                 ~10     !2
         13        SEND_VAL                                                 ~10
         14        DO_ICALL                                                 
         15      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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