3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = '12d9'; ++$a; echo $a, "\n"; ++$a; echo $a;
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/99cQo
function name:  (null)
number of ops:  7
compiled vars:  !0 = $a
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, '12d9'
    3     1        PRE_INC                                                  !0
    4     2        ECHO                                                     !0
          3        ECHO                                                     '%0A'
    5     4        PRE_INC                                                  !0
    6     5        ECHO                                                     !0
          6      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
155.76 ms | 1383 KiB | 13 Q