Problem with regular expressions and url's

I have a problem, want to make script which will cutting off from the page unwanted links, which are posted by users of my website.

I now how to cut off name of this site, but have no idea how to get rid off "http://www." and everything after "/" slash in the address.

Here's my code:

$text = preg_replace("'(example.com)'i", '', $text);

PHP:

I'll be very grateful for help

 

Try the following.

$text = preg_replace("http://example.com/(.*)?''i", '', $text);

Code (markup):

 

Nope, that doesn't works at all :-(

 

<?php
$wrongurl="www.hotmail.com/asdasd/asdasd/adasd";
$array=array("www.","http://");
$text2=str_ireplace($array,"",$wrongurl);
$str = explode('/', $text2);
$text= $str[0];
echo $text;
?>

PHP:

Try this, it will replace "http://", "www." and all letters after "/" in the url.
For example in above code:
1. "http://www.hotmail.com/asdasd/asdasd/adasd" will only show you "hotmail.com"
2. "http://hotmail.com/asdasd/asdasd/adasd" will also show you only "hotmail.com"
3. "www.hotmail.com/asdasd/asdasd/adasd" will also show you only "hotmail.com"

Thanks, hope it helps

 

That's doesn't work neither, and bear in mind that I want to delete whole url

http://www.example.com/something-after-slash

HTML:

and replace with message [link prohibited]

 

So you dont want the whole link itself ? Basically if its a link its not displayed ?

 

Try this:

<?php
$wrongurl="www.hotmail.com/";
$array=array("www.","http://");
$text2=str_ireplace($array,"",$wrongurl);
$str = explode('/', $text2);
if ($str[1]){
echo "[Link Prohibited!]";
}else{
echo "http://www.".$str[0];
}
?>

PHP:

if entered url have any text after slash, it will replace it with "Link Prohibited".

 

This doesn't work I'm getting

http://www.hotmail.com

HTML:

at the top of every page. I give You broader look on the code which I have now:

			     			      $text = ' ' . $text . ' ';
			      $text = preg_replace("'example.com'i", '', $text);
			      return $text; 

HTML:

This code works, I mean it cutting off links

example.com

HTML:

BUT leaves

http://www.

HTML:

and

/something-after-slash

HTML:

 

Use this:

$text = ' ' . $text . ' ';
                  $text="example.com";
$array=array("www.","http://");
$text2=str_ireplace($array,"",$text);
$str = explode('/', $text2);
if ($str[1]){
$text= "[Link Prohibited!]";
}else{
$text= "http://www.".$str[0];
}
                  return $text;

PHP:

 

Still the same, have no idea how to make it working :/

 

Use regular expression

$string = "Bla bla bla..Visit http://regex.kzzen.com for more info. <br />
Visit http://kzzen.com/2008/10/if-you-want-to-earn-money-online/ for more info.<br />
Visit http://www.kzzen.com/?act=what for more info.<br />
Visit www.kzzen.com/?act=what for more info.<br />
";
$pattern = "/http\:\/\/[a-zA-Z0-9\-\.]+\.[a-zA-Z]{2,3}(\/\S*)?/";
$string = preg_replace($pattern,'[Link Prohibited!]',$string);
print $string;

PHP:

This output :

Note that all links start with http:// were replaced. Without http:// it won't be replaced.
And it stop replacing when it found a whitespace.

You can use my Regex Tester and find a better solution, maybe.

 

ads2help Your last solution works just like You said "all links with http:// are replaced with [Link prohibited] message", so it's all right then, but in my case I want to replace only links to a one particular website, is this possible?

 

$rejected_website = 'http:\/\/www.example.com';
$string = "Bla bla bla..Visit http://regex.kzzen.com for more info. <br />
Visit http://www.example.com/something-after-slash for more info.<br />
Visit http://www.example.com for more info.<br />
Visit www.kzzen.com/?act=what for more info.<br />
";
$pattern = "/$rejected_website(\/\S*)?/";
$string = preg_replace($pattern,'[Link Prohibited!]',$string);
print $string;

PHP:

Output :

 

All right its almost working, link

http://www.example.com/something

HTML:

has been cutt off, and replaced with [link prohibitted] msg, but there are still links:

http://example.com/something

HTML:

www.example.com/something

HTML:

and

example.com/something

HTML:

--
edit:
I made up something like that:

$rejected_website = 'example.com';
$pattern = "/(http:\/\/www)?$rejected_website(\/\S*)?/";

PHP:

but I'm getting

www.[Link prohibited]

HTML:

http://[Link progibited]

HTML:

or

http://www.[Link prohibited]

HTML:

 

$rejected_website = 'example.com';
$string = "Bla bla bla..Visit http://regex.kzzen.com for more info. <br />
Visit http://www.example.com/something-after-slash for more info.<br />
Visit http://www.example.com for more info.<br />
Visit example.com for more info.<br />
Visit http://example.com for more info.<br />
Visit notrejected.com for more info.<br />
Visit www.notrejected.com for more info.<br />
";
$pattern = "/(http:\/\/)?(www.)*$rejected_website(\/\S*)?/";
$string = preg_replace($pattern,'[Link Prohibited!]',$string);
print $string;

PHP:

output :

is this ok?

 

close this thread its already been answered,,,

 

Hi ads2help That's works! I'm so much grateful to You! I warn You, that if I'd have some problems with reg. expressions, I'll call You :-D

Cheers