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Jun 27th, 2017
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PHP 0.29 KB | None | 0 0
  1. if(preg_match('/^[0-9A-Za-z]+$/', $_POST['username'])){
  2.  
  3.  }
  4. else {
  5.     echo "Имя пользователя слишком короткое<br>";
  6.     echo "Имя пользователя долно быть не короче 4 символов<br>";
  7.     echo '<a href=reg_form.php>Назад</a>';
  8. }
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