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<?php var_dump(preg_match('#^[a-z\\d\\-.а-я]+\\.[a-zа-я]+$#', 'стикер163.рф'));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/ZKVZ1
function name:  (null)
number of ops:  8
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   INIT_FCALL                                               'var_dump'
          1        INIT_FCALL                                               'preg_match'
          2        SEND_VAL                                                 '%23%5E%5Ba-z%5Cd%5C-.%D0%B0-%D1%8F%5D%2B%5C.%5Ba-z%D0%B0-%D1%8F%5D%2B%24%23'
          3        SEND_VAL                                                 '%D1%81%D1%82%D0%B8%D0%BA%D0%B5%D1%80163.%D1%80%D1%84'
          4        DO_ICALL                                         $0      
          5        SEND_VAR                                                 $0
          6        DO_ICALL                                                 
          7      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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