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;
}
?>
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