3v4l.org

run code in 300+ PHP versions simultaneously
<?php $id="s"; $message=""; $rm_trash = preg_replace('#\/\*.*\*\/#U','',$id); var_dump($rm_trash); var_dump(!preg_match('#^[^0-9]#',$rm_trash));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/r4nkY
function name:  (null)
number of ops:  20
compiled vars:  !0 = $id, !1 = $message, !2 = $rm_trash
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, 's'
    4     1        ASSIGN                                                   !1, ''
    5     2        INIT_FCALL                                               'preg_replace'
          3        SEND_VAL                                                 '%23%5C%2F%5C%2A.%2A%5C%2A%5C%2F%23U'
          4        SEND_VAL                                                 ''
          5        SEND_VAR                                                 !0
          6        DO_ICALL                                         $5      
          7        ASSIGN                                                   !2, $5
    7     8        INIT_FCALL                                               'var_dump'
          9        SEND_VAR                                                 !2
         10        DO_ICALL                                                 
    8    11        INIT_FCALL                                               'var_dump'
         12        INIT_FCALL                                               'preg_match'
         13        SEND_VAL                                                 '%23%5E%5B%5E0-9%5D%23'
         14        SEND_VAR                                                 !2
         15        DO_ICALL                                         $8      
         16        BOOL_NOT                                         ~9      $8
         17        SEND_VAL                                                 ~9
         18        DO_ICALL                                                 
         19      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
149.65 ms | 1395 KiB | 19 Q