[PHP] URL Regular Expression

[Sidoh]

Anyone have one that works?  I've found a few on the internet, but it's been so long since I've created my own regular expressions.

I'm looking for one that follows the syntax:

<protocol>://<subdomain>.<domain>.<com/net,etc>

Thanks in advance!

Edit --

Since no one who posted in this thread was able to come up with one, I was forced to do it on my own!  *sob*

So none of the rest of you have to suffer through such horrid events, I'll post my solution at the top of the thread:

Code: [Select]

$search[] =

"^(((ht|f)tp(s?))\:\/\/)(www.|[a-zA-Z].)[a-zA-Z0-9\-\.]+\.([a-z])(\:[0-9]+)*((\/?))(([a-zA-Z0-9\.

\,\;\?\'\\\=\/\_\-\#]+)?)^";

[deadly7]

One word: Huh?

[Sidoh]

This is the one I found:

Code: [Select]

/^(((ht|f)tp(s?))\:\/\/)?(www.|[a-zA-Z].)[a-zA-Z0-9\-\.]+\.(com|edu|gov|mil|net|org|biz|info|name|museum|us|ca|uk)(\:[0-9]+)*(/($|[a-zA-Z0-9\.\,\;\?\'\\\+&%\$#\=~_\-]+))*$/
I'm not too sure what I need to begin or truncate that string with, but it doesn't work with preg_replace.

[Quik]

Maybe you could include some information about what you need this for.

[Sidoh]

Like this:

http://www.google.com

See how SMF automatically generates an ancor tag becaue it recognizes it as a link?  That's what I'm wanting.

[Quik]

If 'http://' is present, it creates <a href=" ...

[Sidoh]

It's more elaborate than that.

ftp://www.something.com

And I would probably settle for that, but I'm not sure how to translate it into a regular expression, which is why I'm creating this post.

[Sidoh]

Someone's got to have one...

[Blaze]

I'd search for www, http and ://.

[Sidoh]

I'd search for www, http and ://.

I know that...

I want it translated into a Regular Expression.  That's why I put regex in the title! 

[Ryan Marcus]

Its not all that hard.

Method 1: Split the message into an array seperated by spaces. One element per word. Then, use parse_url. Slow and clunky.
Method 2: Use strpos to search find "http", "://", ".com", ".net" and ".org". Use a buffer type method.
Method 3: Use a good WYSWYG web based editor, like the one in exponent.

Hope I helped...

[Blaze]

How about you combine method2 and 1...

Search for it, then use that function.

[Ryan Marcus]

Why bother? Once you know its a URL, you don't need to parse it.. Just add the <a> tag.

[Sidoh]

Its not all that hard.

Method 1: Split the message into an array seperated by spaces. One element per word. Then, use parse_url. Slow and clunky.
Method 2: Use strpos to search find "http", "://", ".com", ".net" and ".org". Use a buffer type method.
Method 3: Use a good WYSWYG web based editor, like the one in exponent.

Hope I helped...

You're thinking of too abstract a method.

I want a regular expression that defines a URL.  I posted one, but there's obviously something incorrect about it--it doesn't work.

Regular Expressions are vastly more efficient than anything you posted.  There's no reason for me to use a WYSIWYG editor.  I'm developing a function that will search and define links in dynamic content.  I just need a regular expression that accurately defines a URL.  After this, I'd just use preg_replace to replace all URL's to a URL+Anchor.

It's been a long time since I've worked with regular expressions much, and I was hoping there was someone here who's more fresh with them than I.

[Joe]

for(int i = 0; i < strlen(data); i++) {
  if (substr(data, i, 7) == "http://") {
    // url starts here
  } elseif (substr(data, i, 6) == "ftp://") {
    // omfg another url!
  } elseif (something) {
    // you get the drift
  } else {
    // LOL NOTHING
  }
}

EDIT -
I had my less than sign backwards, as usual. -sigh-