How do I linkify urls in a string with php?

Question

I have the following string:

"Look on http://www.google.com".

I need to convert it to:

"Look on http://www.google.com"

The original string can have more than 1 URL string.

How do I do this in php?

Thanks

Answer 1

You can use the following:

$string = "Look on http://www.google.com";
$string = preg_replace(
              "~[[:alpha:]]+://[^<>[:space:]]+[[:alnum:]/]~",
              "<a href="\0">\0</a>", 
              $string);

PHP versions < 5.3 (ereg_replace) otherwise (preg_replace)