3v4l.org

run code in 300+ PHP versions simultaneously
<?php $x = isset($x) ?: 'default'; echo $x;
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/XtjPn
function name:  (null)
number of ops:  6
compiled vars:  !0 = $x
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ISSET_ISEMPTY_CV                                 ~1      !0
          1        JMP_SET                                          ~2      ~1, ->3
          2        QM_ASSIGN                                        ~2      'default'
          3        ASSIGN                                                   !0, ~2
    4     4        ECHO                                                     !0
          5      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
148.81 ms | 1396 KiB | 13 Q