3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a=1; $b=&$a; $c = (++$a); $d = $a++; echo $c +$d;
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/RdFkn
function name:  (null)
number of ops:  9
compiled vars:  !0 = $a, !1 = $b, !2 = $c, !3 = $d
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, 1
    3     1        ASSIGN_REF                                               !1, !0
    4     2        PRE_INC                                          ~6      !0
          3        ASSIGN                                                   !2, ~6
    5     4        POST_INC                                         ~8      !0
          5        ASSIGN                                                   !3, ~8
    6     6        ADD                                              ~10     !2, !3
          7        ECHO                                                     ~10
          8      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
157.73 ms | 1392 KiB | 13 Q