3v4l.org

run code in 300+ PHP versions simultaneously
<?php define('sys', 'print_r'); (sys)('23');
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/00BQB
function name:  (null)
number of ops:  9
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   INIT_FCALL                                               'define'
          1        SEND_VAL                                                 'sys'
          2        SEND_VAL                                                 'print_r'
          3        DO_ICALL                                                 
    3     4        FETCH_CONSTANT                                   ~1      'sys'
          5        INIT_DYNAMIC_CALL                                        ~1
          6        SEND_VAL_EX                                              '23'
          7        DO_FCALL                                      0          
          8      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
145.76 ms | 1385 KiB | 15 Q