3v4l.org

run code in 300+ PHP versions simultaneously
<?php strlen(preg_replace("/[^A-Za-z0-9]/", '', "\u00a0\ufeff"));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/l8GWP
function name:  (null)
number of ops:  8
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   INIT_FCALL                                               'preg_replace'
          1        SEND_VAL                                                 '%2F%5B%5EA-Za-z0-9%5D%2F'
          2        SEND_VAL                                                 ''
          3        SEND_VAL                                                 '%5Cu00a0%5Cufeff'
          4        DO_ICALL                                         $0      
          5        STRLEN                                           ~1      $0
          6        FREE                                                     ~1
          7      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
157.62 ms | 1394 KiB | 15 Q