坛子里有没有正则高人？求助啊

l12ab

求个PHP正则验证URL的帖子

我的网站文章中有些链接作了xxx，有的没有，我想用正则将全站没有加、标签的http开头的链接都加上链接应该怎么写正则呢？

对于下面这样的内容不作改动[ol]

[url=]http://xxx.xxx.com/xxx/xxx.xxx[/url][/ol]复制代码[ol]

[img][/img]
[/ol]复制代码这样的http开头的内容加标签[ol]

http://xxx.xxx.com/xxx/xxx.xxx[/ol]复制代码给个字符串吧[ol]

[img][/img]
Artist : Circle II Circle

Album : Consequence Of Power

Label : AFM

Genre : Metal

Street date : 2010-00-00

Quality : 217 kbps / 44.1kHz / Joint Stereo

Encoder : Lame 3.97 -V2 vbr-new

Size : 83.07 MB

Time : 50:40 min

Url : http://222.222.222/222.222
1. Whispers In Vain 5:24

2. Consequence Of Power 4:25

3. Out Of Nowhere 4:10

4. Remember 5:30

5. Mirage 5:05

6. Episodes Of Mania 5:09

7. Redemption 5:31

8. Take Back Yesterday 5:03

9. Anathema 5:16

10. Blood Of An Angel 5:07
Circle II Circles 5th studio album, Consequence Of Power,

is clearly the ultimate masterpiece created by master

vocalist Zak Stevens (ex Savatage) and his band! Strong

hooks, heavy riffs and Zaks unique voice have all fused on

Consequence Of Power to exceed their past catalogue. Watch

out for your favorite album of 2010: Consequence Of Power

by Circle II Circle!


http://333.333.333/333.333
http://555.555.555/555.555[/ol]复制代码目标是给字符串里的http://222.222.222/222.222和http://333.333.333/333.333加链接
恳请高人给个正则吧

zyypp

没完全理解~~~

xspoco

什么意思？

l12ab

就是给没有加标签的URL加上标签

gdtv

[ol]

[img][/img]
Artist : Circle II Circle

Album : Consequence Of Power

Label : AFM

Genre : Metal

Street date : 2010-00-00

Quality : 217 kbps / 44.1kHz / Joint Stereo

Encoder : Lame 3.97 -V2 vbr-new

Size : 83.07 MB

Time : 50:40 min

Url : http://222.222.222/222.222
1. Whispers In Vain 5:24

2. Consequence Of Power 4:25

3. Out Of Nowhere 4:10

4. Remember 5:30

5. Mirage 5:05

6. Episodes Of Mania 5:09

7. Redemption 5:31

8. Take Back Yesterday 5:03

9. Anathema 5:16

10. Blood Of An Angel 5:07
Circle II Circles 5th studio album, Consequence Of Power,

is clearly the ultimate masterpiece created by master

vocalist Zak Stevens (ex Savatage) and his band! Strong

hooks, heavy riffs and Zaks unique voice have all fused on

Consequence Of Power to exceed their past catalogue. Watch

out for your favorite album of 2010: Consequence Of Power

by Circle II Circle!


http://333.333.333/333.333
[url=]http://555.555.555/555.555[/url]

';

function remove_http($matches){

        return str_replace('http://','##########',$matches[0]);

}

$str = preg_replace_callback("/]*href=['"]*http:\/\/[^]*>http:\/\/[^]*/i",'remove_http',$str);

$str = preg_replace_callback("/]*src=['"]*(http:\/\/)[^]*>/i",'remove_http',$str);

$str = preg_replace("/http:\/\/[^\r\n\s]*/i",'[url=]\0[/url]',$str);

$str = str_replace('##########','http://',$str);

echo $str;

?>[/ol]复制代码求更简单的方法

[ 本帖最后由 gdtv 于 2010-10-11 14:40 编辑 ]

ninjai

PHP Example: Automatically link URL's inside text.

$text = preg_replace('@(https?://([-\w\.]+)+(:\d+)?(/([\w/_\.]*(\?\S+)?)?)?)@', '[url=]$1[/url]', $text);

l12ab

谢谢高人

但是如果还能在完美点就好了，现在对于下面这种情况会出问题
5555555555555

l12ab

原帖由 ninjai 于 2010-10-11 15:31 发表


PHP Example: Automatically link URL's inside text.

$text = preg_replace('@(https?://([-\w\.]+)+(:\d+)?(/([\w/_\.]*(\?\S+)?)?)?)@', '$1', $text);
这个没有考虑已经在img和a标签内情况

l12ab

[ol]

$str = preg_replace_callback("/]*href=['"]*http:\/\/[^]*>[^]*/i","remove_http",$str);[/ol]复制代码这样好像就OK 了

l12ab

5楼的方法应该算一个变通的方法
先替换标签内URL的http://
在匹配替换http://的URL
再将第一步被替换的还原

不知道还有没有更好的方法，用(?!exp)这类？