3v4l.org

run code in 300+ PHP versions simultaneously
<?php $str = 'asd' . chr(0x20) . ' ' . chr(0x19) . chr(0x00) . 'df'; var_dump($str); $str = preg_replace('/[x00-x19]/', '', $str); var_dump($str);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/d81TE
function name:  (null)
number of ops:  14
compiled vars:  !0 = $str
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, 'asd+++%19%00df'
    3     1        INIT_FCALL                                               'var_dump'
          2        SEND_VAR                                                 !0
          3        DO_ICALL                                                 
    4     4        INIT_FCALL                                               'preg_replace'
          5        SEND_VAL                                                 '%2F%5Bx00-x19%5D%2F'
          6        SEND_VAL                                                 ''
          7        SEND_VAR                                                 !0
          8        DO_ICALL                                         $3      
          9        ASSIGN                                                   !0, $3
    5    10        INIT_FCALL                                               'var_dump'
         11        SEND_VAR                                                 !0
         12        DO_ICALL                                                 
         13      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
146.07 ms | 1394 KiB | 17 Q