3v4l.org

run code in 300+ PHP versions simultaneously
<?php $s='特殊字符文件名-+~!@#$%^&()_=\';.txt'; var_dump( urldecode(urlencode($s)) != $s);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/I7FHY
function name:  (null)
number of ops:  12
compiled vars:  !0 = $s
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, '%E7%89%B9%E6%AE%8A%E5%AD%97%E7%AC%A6%E6%96%87%E4%BB%B6%E5%90%8D-%2B%7E%21%40%23%24%25%5E%26%28%29_%3D%27%3B.txt'
    4     1        INIT_FCALL                                               'var_dump'
          2        INIT_FCALL                                               'urldecode'
          3        INIT_FCALL                                               'urlencode'
          4        SEND_VAR                                                 !0
          5        DO_ICALL                                         $2      
          6        SEND_VAR                                                 $2
          7        DO_ICALL                                         $3      
          8        IS_NOT_EQUAL                                     ~4      !0, $3
          9        SEND_VAL                                                 ~4
         10        DO_ICALL                                                 
         11      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
170.53 ms | 1398 KiB | 19 Q