Email+URL的判断和自动转换函数

<?php function validateEmail($email);;{;;;;;return eregi("^[_a-z0-9-]+(.[_a-z0-9-]+)*@[a-z0-9-]+(.[a-z0-9-]+)*(.[a-z]{2,3})$", $email);;;};;function validateURL($url);;{;;;;;return eregi("^((ht|f)tp://)((([a-z0-9-]+(.[a-z0-9-]+)*(.[a-z]{2,3}))|(([0-9]{1,3}.){3}([0-9]{1,3})))((/|?)[a-z0-9~#%&'_+=:?.-]*)*)$", $url);;;};;function convertURLS($text);;{;;;;;$text = eregi_replace("((ht|f)tp://www.|www.)([a-z0-9-]+(.[a-z0-9-]+)*(.[a-z]{2,3})((/|?)[a-z0-9~#%&/'_+=:?.-]*)*)", "http://www.3", $text);;;;;;;$text = eregi_replace("((ht|f)tp://)((([a-z0-9-]+(.[a-z0-9-]+)*(.[a-z]{2,3}))|(([0-9]{1,3}.){3}([0-9]{1,3})))((/|?)[a-z0-9~#%&'_+=:?.-]*)*)", "<a href="0">0</a>", $text);;;;;;;return $text;;;};;function convertMail($text);;{;;;;;$text = eregi_replace("([_a-z0-9-]+(.[_a-z0-9-]+)*@[a-z0-9-]+(.[a-z0-9-]+)*(.[a-z]{2,3}))", "<a href='mailto:0'>0</a>", $text);;;;;;;return $text;;;};;function convertAllLinks($text);;{;;;;;$text = convertURLS($text);;;;;;;$text = convertMail($text);;;;;;;return $text;;;} ?>;;