title: check if the string contains alphabets in php
body: <p>How to check if the string has alphabets in PHP</p>
  
  <p>The <a href="http://www.php.net/manual/en/function.ctype-alpha.php" rel="noreferrer">ctype_alpha</a> and  <a href="http://www.php.net/manual/en/function.ctype-digit.php" rel="noreferrer">ctype_digit</a> doesn't help in it. is their any method?</p>