Extracting links etc from a string

[envexlabs]

Hey,

 

Lets use twitter for an example.

 

I have a string that says:

 

Hey everyone, check out my new portfolio site at mysweetsite.com

 

If the user was made to put a tag in from the the url, how would i extract the url from the string so i could format it properly?

 

Thanks.

[MatthewJ]

http://us.php.net/preg_match

[RussellReal]

preg_replace

preg match would just match it lol

 

but you shouldn't do

 

whatever.***

 

match: www.whatever.***

 

or

 

(http://[^ ]+)

[MatthewJ]

lol? Is it 1995 where you live?

 

 

I misread and thought he wanted to "extract" the url for another use. But it should have led him down the road pretty quickly to preg_replace()

 

good catch though

[RussellReal]

Is 1995 a bad thing? I was 5 then actually and I'd love to be 5 again lol!

[envexlabs]

Hey,

 

I think i messed up on my explanation.

 

originally $string would = "Hey everyone, check out my new portfolio site at mysweetsite.com"

 

I would like to work some magic and have $string echo out:

 

Hey everyone, check out my new portfolio site at <a href="http://mysweetsite.com">mysweetsite.com</a>

 

So that it renders out a clickable link.

 

would preg_replace() still be the answer?

[RussellReal]

What if you have bad grammar and you did

 

"welcome to whatever.come to this page and lets see!!"

whatever.com would become a link and the e will be left out.. you need either www. or http:// to let the parser know its a link..

[envexlabs]

Ok,

 

lets say that the user needed the http:// in front of the link.

 

Is preg_replace() still the best route?

[RussellReal]

if they always supply "http://" then you could do strpos() for "http://" and then another strpos() for a " " (space) and then substr() the difference

 

references:

strpos

substr