3v4l.org

run code in 300+ PHP versions simultaneously
<?php spl_autoload_register('var_dump'); $a = 'O:1:"A":0:{}'; unserialize($a);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/E255U
function name:  (null)
number of ops:  8
compiled vars:  !0 = $a
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   INIT_FCALL                                               'spl_autoload_register'
          1        SEND_VAL                                                 'var_dump'
          2        DO_ICALL                                                 
    6     3        ASSIGN                                                   !0, 'O%3A1%3A%22A%22%3A0%3A%7B%7D'
    7     4        INIT_FCALL                                               'unserialize'
          5        SEND_VAR                                                 !0
          6        DO_ICALL                                                 
          7      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
180.46 ms | 1394 KiB | 17 Q