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<?php //$var = 'Go'; $test = isset($var) ?: 'NO'; echo $test;
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/R1l2G
function name:  (null)
number of ops:  6
compiled vars:  !0 = $test, !1 = $var
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    5     0  E >   ISSET_ISEMPTY_CV                                 ~2      !1
          1        JMP_SET                                          ~3      ~2, ->3
          2        QM_ASSIGN                                        ~3      'NO'
          3        ASSIGN                                                   !0, ~3
    6     4        ECHO                                                     !0
          5      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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