3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = null; $x = $a ?? "butts"; echo $x;
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/AO4TA
function name:  (null)
number of ops:  6
compiled vars:  !0 = $a, !1 = $x
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, null
    5     1        COALESCE                                         ~3      !0
          2        QM_ASSIGN                                        ~3      'butts'
          3        ASSIGN                                                   !1, ~3
    7     4        ECHO                                                     !1
          5      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
161.87 ms | 1392 KiB | 13 Q