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Skip to comments (20) PHP: Automatic Hyperlink Function
Posted by dustin on Oct 16 2005 @ 13:56 :: 5681 unique visits

It took my awhile to get this all right, and it's a huge timesaver if you're looking to make a message board/shout box/some sort of system where users can just post an email or URL (http/https/ftp) in plain text, then have your code automatically create the hyperlink.

CODE: PHP

function autolink($foo) {

 $foo = preg_replace('/(?<!S)([w.]+)(@)([w.]+)b/i', '<a href="mailto:$1@$3">$1@$3</a>', $foo);

 $foo = preg_replace('/(?<!S)((http(s?)://)|(www.))+([w./&=#?-~%;]+)b/i', '<a href="http$3://$4$5" target="_blank">http$3://$4$5</a>', $foo); 

 $foo = preg_replace('/(?<!S)((ftp(7?)://)|(ftp.))([w./&=#?-~%;]+)b/i', '<a href="ftp$3://$4$5" target="_blank">ftp$3://$4$5</a>', $foo); 

 return ($foo);

}

20 comments posted so far
Add your own »

1. On Oct 20 2005 @ 20:48 guest wrote:

fine pice of code

2. On Jan 30 2006 @ 04:16 guest wrote:

wow. nice.

3. On Jan 31 2006 @ 23:53 guest wrote:

Does it work if it the spelling would be http://www.test.com , www.test.com and test.com?

4. On May 02 2006 @ 21:30 dustin wrote:

I just refound this site :P

to the above: it works on the first two, but not that last one, it's too common.

5. On May 13 2006 @ 23:10 guest wrote:

dont work :(
warning: preg_replace() [function.preg-replace]: Unknown modifier '/' in ...

6. On Jun 26 2006 @ 21:46 guest wrote:

yea i got that too....
Warning: preg_replace(): Unknown modifier '/' in....

7. On Jul 05 2006 @ 15:09 guest wrote:

Tried using it, didnt work. I might have dont something wrong but it erased my whole string.

8. On Jul 05 2006 @ 15:10 guest wrote:

done*

9. On Mar 26 2008 @ 18:46 guest wrote:

anyone got a solution? I got the "Warning: preg_replace(): Unknown modifier '/' in...." too.

10. On Oct 15 2008 @ 06:32 guest wrote:

Its missing the escaping of the /, try this:

function autolink($foo) {
$foo = preg_replace('/(?<!S)([w.]+)(@)([w.]+)b/i', '<a href="mailto:$1@$3">$1@$3</a>', $foo);
$foo = preg_replace('/(?<!S)((http(s?):\/\/)|(www.))+([w.\/&=#?-~%;]+)b/i', '<a href="http$3://$4$5" target="_blank">http$3://$4$5</a>', $foo);
$foo = preg_replace('/(?<!S)((ftp(7?):\/\/)|(ftp.))([w.\/&=#?-~%;]+)b/i', '<a href="ftp$3://$4$5" target="_blank">ftp$3://$4$5</a>', $foo);
return ($foo);
}

11. On Oct 15 2008 @ 06:34 guest wrote:

This is a handy function, and works pretty well, except when there is a trailing / ie:

http://www.google.com/adsense/ it will return a href link of http://www.google.com/adsense

12. On Oct 22 2008 @ 18:16 guest wrote:

I tried the modified code is post #11. I doesn't give the error like the previous version, but it seems ineffective. I put together some test code...

echo("Test 1... ");
$testString = "www.aerialvisuals.ca";
echo("Before: " . $testString . " ");
echo("After: " . autolink($testString) . " ");

echo("Test 2... ");
$testString = "http://www.aerialvisuals.ca";
echo("Before: " . $testString . " ");
echo("After: " . autolink($testString) . " ");

echo("Test 3... ");
$testString = "http://www.aerialvisuals.ca/Locator.php";
echo("Before: " . $testString . " ");
echo("After: " . autolink($testString) . " ");

echo("Test 4... ");
$testString = "http://www.aerialvisuals.ca/Locator.php?Serial=1425";
echo("Before: " . $testString . " ");
echo("After: " . autolink($testString) . " ");

...on this page...

http://www.aerialvisuals.ca/Admin/TestPage_PHP_Stuff.php

...so you can check it out for yourself. As you can see there is no effect. Am I missing something here?

Mike

13. On Oct 22 2008 @ 21:23 Mike wrote:

I found something that works a bit better here...
http://www.totallyphp.co.uk/code/convert_links_into_clickable_hyperlinks.htm

I found it could handle "http://www.aerialvisuals.ca" but could not handle "www.aerialvisuals.ca". I modified the function to...

function autolink_test($foo)
{
// Modified from: http://www.totallyphp.co.uk/code/convert_links_into_clickable_hyperlinks.htm
$foo = eregi_replace('(((f|ht){1}tp://)[-a-zA-Z0-9@:%_\+.~#?&//=]+)', '<a href="\\1">\\1</a>', $foo);
if( strpos($foo, "http") === FALSE )
{
$foo = eregi_replace('(www.[-a-zA-Z0-9@:%_\+.~#?&//=]+)', '<a href="http://\\1" target=_blank rel=nofollow >\\1</a>', $foo);
}
else
{
$foo = eregi_replace('([[:space:]()[{}])(www.[-a-zA-Z0-9@:%_\+.~#?&//=]+)', '\\1<a href="http://\\2" target=_blank rel=nofollow >\\2</a>', $foo);
}
$foo = eregi_replace('([_\.0-9a-z-]+@([0-9a-z][0-9a-z-]+\.)+[a-z]{2,3})', '<a href="mailto:\\1">\\1</a>', $foo);
return $foo;
}

...which allowed me to edit a minimal of regular expresses. I don't really understand regular expressions anyway. Unfortunately I am not able to get the link to open in a new window. Here is a page where I am trying to test the function...

http://www.aerialvisuals.ca/Admin/TestPage_PHP_Stuff2.php

Thoughts anyone?

Mike

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15. On Apr 13 2009 @ 14:14 Valencia wrote:

Hi, I tried this piece of code there was a warning as follows:

Warning: preg_replace(): Unknown modifier '/' in....

I have no time for working onto this because I am busy in my 642-812 Exam preparation. So anyone can help me about the warning. I have also plan of giving 642-901. I have a friend who is a PHP programmer but she can’t help me because of her 70-291 Exam. So I need any body’s help in this matter. I badly need this piece of code but it should be correct and working. In future, there would be no free time for me because of 220-601 Exam preparation.

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« Previous entry | Next entry » Browse > Snippets

Skip to comments (20) PHP: Automatic Hyperlink Function
Posted by dustin on Oct 16 2005 @ 13:56 :: 5681 unique visits

20 comments posted so far
Add your own »

1. On Oct 20 2005 @ 20:48 guest wrote:

2. On Jan 30 2006 @ 04:16 guest wrote:

3. On Jan 31 2006 @ 23:53 guest wrote:

4. On May 02 2006 @ 21:30 dustin wrote:

5. On May 13 2006 @ 23:10 guest wrote:

6. On Jun 26 2006 @ 21:46 guest wrote:

7. On Jul 05 2006 @ 15:09 guest wrote:

8. On Jul 05 2006 @ 15:10 guest wrote:

9. On Mar 26 2008 @ 18:46 guest wrote:

10. On Oct 15 2008 @ 06:32 guest wrote:

11. On Oct 15 2008 @ 06:34 guest wrote:

12. On Oct 22 2008 @ 18:16 guest wrote:

13. On Oct 22 2008 @ 21:23 Mike wrote:

14. On Feb 10 2009 @ 01:57 zsdasd wrote:

15. On Apr 13 2009 @ 14:14 Valencia wrote:

16. On Apr 29 2009 @ 11:38 guest wrote:

17. On May 25 2009 @ 08:10 maryzheng wrote:

18. On Jun 25 2009 @ 04:11 guest wrote:

19. On Jul 14 2009 @ 04:01 guest wrote:

20. On Jul 14 2009 @ 05:53 guest wrote:

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« Previous entry | Next entry » Browse > Snippets

Skip to comments (20) PHP: Automatic Hyperlink Function Posted by dustin on Oct 16 2005 @ 13:56 :: 5681 unique visits

20 comments posted so far Add your own »

1. On Oct 20 2005 @ 20:48 guest wrote:

2. On Jan 30 2006 @ 04:16 guest wrote:

3. On Jan 31 2006 @ 23:53 guest wrote:

4. On May 02 2006 @ 21:30 dustin wrote:

5. On May 13 2006 @ 23:10 guest wrote:

6. On Jun 26 2006 @ 21:46 guest wrote:

7. On Jul 05 2006 @ 15:09 guest wrote:

8. On Jul 05 2006 @ 15:10 guest wrote:

9. On Mar 26 2008 @ 18:46 guest wrote:

10. On Oct 15 2008 @ 06:32 guest wrote:

11. On Oct 15 2008 @ 06:34 guest wrote:

12. On Oct 22 2008 @ 18:16 guest wrote:

13. On Oct 22 2008 @ 21:23 Mike wrote:

14. On Feb 10 2009 @ 01:57 zsdasd wrote:

15. On Apr 13 2009 @ 14:14 Valencia wrote:

16. On Apr 29 2009 @ 11:38 guest wrote:

17. On May 25 2009 @ 08:10 maryzheng wrote:

18. On Jun 25 2009 @ 04:11 guest wrote:

19. On Jul 14 2009 @ 04:01 guest wrote:

20. On Jul 14 2009 @ 05:53 guest wrote:

Add a new comment

Skip to comments (20) PHP: Automatic Hyperlink Function
Posted by dustin on Oct 16 2005 @ 13:56 :: 5681 unique visits

20 comments posted so far
Add your own »