如何使输入的文本中含有的网址自动出现链接？？？

Question

<script language=JScript>
function replaceDemo()
{
var tSrings,re,result;
tStrings = "这是一个测试文本，请见www.sina.com.cn或者http://www.sina.com.cn上的例子。其中在显示这段文本的时候会在那个网址上自动出现链接。";
re = /(((\w+):\/\/)?(([^/:\xff-\uffff]+)(:\d*)?([^# \xff-\uffff]*)))/g ;
result=tStrings.replace(re,"<a href='$1' target=_blank>$1</a>")
return result;
}
document.write(replaceDemo());
</script>

Answer 1

类似的，UBB代码，可以一试： function ubb($Text)
{ 
$Text=htmlspecialchars($Text); 
$Text=stripslashes($Text);
$Text=ereg_replace("\r\n","<br>",$Text); 
$Text=ereg_replace("\r","<br>",$Text); 
$Text=nl2br($Text); 
$Text=preg_replace("/\\t/is","  ",$Text); 
$Text=ereg_replace(" ","&nbsp;",$Text); 

$Text=preg_replace("/\[h1\](.+?)\[\/h1\]/is","<h1>\\1</h1>",$Text); 
$Text=preg_replace("/\[h2\](.+?)\[\/h2\]/is","<h2>\\1</h2>",$Text); 
$Text=preg_replace("/\[h3\](.+?)\[\/h3\]/is","<h3>\\1</h3>",$Text); 
$Text=preg_replace("/\[h4\](.+?)\[\/h4\]/is","<h4>\\1</h4>",$Text); 
$Text=preg_replace("/\[h5\](.+?)\[\/h5\]/is","<h5>\\1</h5>",$Text); 
$Text=preg_replace("/\[h6\](.+?)\[\/h6\]/is","<h6>\\1</h6>",$Text); 
$Text=preg_replace("/\[center\](.+?)\[\/center\]/is","<center>\\1</center>",$Text); 
$Text=preg_replace("/\[big\](.+?)\[\/big\]/is","<big>\\1</big>",$Text); 
$Text=preg_replace("/\[small\](.+?)\[\/small\]/is","<small>\\1</small>",$Text); 

$Text=preg_replace("/\[url\](http:\/\/.+?)\[\/url\]/is","<a href=\\1>\\1</a>",$Text); 
$Text=preg_replace("/\[url\](.+?)\[\/url\]/is","<a href=\'http://\\1\'>http://\\1</a>",$Text); 
$Text=preg_replace("/\[url=(http:\/\/.+?)\](.*)\[\/url\]/is","<a href=\\1>\\2</a>",$Text); 
$Text=preg_replace("/\[url=(.+?)\](.*)\[\/url\]/is","<a href=http://\\1>\\2</a>",$Text); 

$Text=preg_replace("/\[img\](.+?)\[\/img\]/is","<img src=\\1 border=0>",$Text); 
$Text=preg_replace("/\[color=(.+?)\](.+?)\[\/color\]/is","<font color=\\1>\\2</font>",$Text); 
$Text=preg_replace("/\[size=(.+?)\](.+?)\[\/size\]/is","<font size=\\1>\\2</font>",$Text); 
$Text=preg_replace("/\[sup\](.+?)\[\/sup\]/is","^\\1",$Text); 
$Text=preg_replace("/\[sub\](.+?)\[\/sub\]/is","_\\1",$Text); 
$Text=preg_replace("/\[pre\](.+?)\[\/pre\]/is","<pre>\\1</pre>",$Text); 
$Text=preg_replace("/\[email\](.+?)\[\/email\]/is","<a href=mailto:\\1>\\1</a>",$Text); 
$Text=preg_replace("/\[i\](.+?)\[\/i\]/is","<i>\\1</i>",$Text); 
$Text=preg_replace("/\[b\](.+?)\[\/b\]/is","<b>\\1</b>",$Text); 
$Text=preg_replace("/\[quote\](.+?)\[\/quote\]/is","<blockquote><font size='1' face='Courier New'>quote:</font><hr>\\1<hr></blockquote>", $Text); 
$Text=preg_replace("/\[code\](.+?)\[\/code\]/is","<blockquote><font size='1' face='Times New Roman'>code:</font><hr color='lightblue'><i>\\1</i><hr color='lightblue'></blockquote>", $Text); 
$Text=preg_replace("/\[sig\](.+?)\[\/sig\]/is","<div style='text-align: left; color: darkgreen; margin-left: 5%'><br><br>--------------------------<br>\\1<br>--------------------------</div>", $Text); 
$Text=ereg_replace("\[hr\]","<hr>",$Text);
return $Text; 
}