3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = 1; $b = 10; echo ++$a + $b++ + --$a; echo $a.", ".$b;
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/i5FeJ
function name:  (null)
number of ops:  12
compiled vars:  !0 = $a, !1 = $b
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, 1
    4     1        ASSIGN                                                   !1, 10
    6     2        PRE_INC                                          ~4      !0
          3        POST_INC                                         ~5      !1
          4        ADD                                              ~6      ~4, ~5
          5        PRE_DEC                                          ~7      !0
          6        ADD                                              ~8      ~6, ~7
          7        ECHO                                                     ~8
    7     8        CONCAT                                           ~9      !0, '%2C+'
          9        CONCAT                                           ~10     ~9, !1
         10        ECHO                                                     ~10
         11      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
148.68 ms | 1392 KiB | 13 Q