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<?php $var = "some value"; unset($var); $isnull = is_null($var); $isnull2 = ($var === null); $isset = isset($var); var_dump($var); var_dump($isnull); var_dump($isnull2); var_dump($isset);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/lUcVV
function name:  (null)
number of ops:  21
compiled vars:  !0 = $var, !1 = $isnull, !2 = $isnull2, !3 = $isset
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, 'some+value'
    5     1        UNSET_CV                                                 !0
    7     2        TYPE_CHECK                                    2  ~5      !0
          3        ASSIGN                                                   !1, ~5
    8     4        TYPE_CHECK                                    2  ~7      !0
          5        ASSIGN                                                   !2, ~7
    9     6        ISSET_ISEMPTY_CV                                 ~9      !0
          7        ASSIGN                                                   !3, ~9
   10     8        INIT_FCALL                                               'var_dump'
          9        SEND_VAR                                                 !0
         10        DO_ICALL                                                 
   11    11        INIT_FCALL                                               'var_dump'
         12        SEND_VAR                                                 !1
         13        DO_ICALL                                                 
   12    14        INIT_FCALL                                               'var_dump'
         15        SEND_VAR                                                 !2
         16        DO_ICALL                                                 
   13    17        INIT_FCALL                                               'var_dump'
         18        SEND_VAR                                                 !3
         19        DO_ICALL                                                 
         20      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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