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<? echo preg_match('~^[0-9a-zA-ZäöüÄÖÜß\-\.]{3,20}$~', 'bobßä'); ?>
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/0iTRO
function name:  (null)
number of ops:  6
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   INIT_FCALL                                               'preg_match'
          1        SEND_VAL                                                 '%7E%5E%5B0-9a-zA-Z%C3%A4%C3%B6%C3%BC%C3%84%C3%96%C3%9C%C3%9F%5C-%5C.%5D%7B3%2C20%7D%24%7E'
          2        SEND_VAL                                                 'bob%C3%9F%C3%A4'
          3        DO_ICALL                                         $0      
          4        ECHO                                                     $0
    5     5      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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