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<?php $regex = "/^[äöüÄÖÜé]/"; $str = '??übaé'; echo preg_replace($regex, '', $str);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/4eJur
function name:  (null)
number of ops:  9
compiled vars:  !0 = $regex, !1 = $str
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, '%2F%5E%5B%C3%A4%C3%B6%C3%BC%C3%84%C3%96%C3%9C%C3%A9%5D%2F'
    5     1        ASSIGN                                                   !1, '%3F%3F%C3%BCba%C3%A9'
    7     2        INIT_FCALL                                               'preg_replace'
          3        SEND_VAR                                                 !0
          4        SEND_VAL                                                 ''
          5        SEND_VAR                                                 !1
          6        DO_ICALL                                         $4      
          7        ECHO                                                     $4
          8      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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