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<?php $test = null; if (!isset($test2)) { // notice echo 'is null'; }
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 4, Position 2 = 5
Branch analysis from position: 4
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 5
filename:       /in/9H4WP
function name:  (null)
number of ops:  6
compiled vars:  !0 = $test, !1 = $test2
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, null
    4     1        ISSET_ISEMPTY_CV                                 ~3      !1
          2        BOOL_NOT                                         ~4      ~3
          3      > JMPZ                                                     ~4, ->5
    5     4    >   ECHO                                                     'is+null'
    6     5    > > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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