Question

Right now i am using

$content = preg_replace('@(https?://([-\w\.]+)+(:\d+)?(/([\w/_\.%-]*(\?\S+)?)?)?)@', '<a href="$1" target="_blank">$1</a>', $content);

for replacing url text with links. But, it doesn’t works with + and ~ symbols in url. Can anyone figure it out what have to be done over here.

And also
i want its modified version for download links which replace url text with Download.

$content = preg_replace('@(https?://([-\w\.]+)+(:\d+)?(/([\w/_\.%-]*(\?\S+)?)?)?)@', '<a href="$1" target="_blank">Download</a>', $content);

for

 $fields=array('.exe','.mp3','.pdf','.rar','.doc','.jar','.ppt','.xls','.png','.jpg','.jpeg','.gif','.mp4','.avi','.mkv','.flv','.3gp','.mms','.sis','.sisx','.jad','.mdi','.qcp');

extensions.

e.g.,
http://www.abc.com/song1.mp3

<a href="http://www.abc.com/song1.mp3" target="_blank">Download</a>

http://www.abc.com?id=1&query=preg+replace

 <a href="http://www.abc.com?id=1&query=preg+replace" target="_blank">http://www.abc.com?id=1&query=preg+replace</a>

Answer 1

Try this for links with + and ~:

@(https?://([-\w\.]+)+(:\d+)?((/[\w/_\.%\-+~]*)?(\?\S+)?)?)@

And this for your downloads:

@(https?://([-\w\.]+)+(:\d+)?/[\w/_\.%\-+~]+(\.exe|\.mp3|\.pdf|\.rar|\.doc|\.jar|\.ppt|\.xls|\.png|\.jpg|\.jpeg|\.gif|\.mp4|\.avi|\.mkv|\.flv|\.3gp|\.mms|\.sis|\.sisx|\.jad|\.mdi|\.qcp)(\?\S+)?)@

Here you can test them:
http://regexr.com?2vdij
http://regexr.com?2vdia

EDIT:

Now I see your problem with the link http://www.abc.com?id=1&query=preg+replace – there is a parentheses flaw in your first regexp. I have corrected my first example!