Question

let’s say i have a string like this:

$string = 'Lorem Ipsum available, <a href="##article-6##">but the majority</a> have suffered alteration in some form, by injected humour.';

Notice the <a href="##article-6##">but the majority</a>

Using this i want to link my articles based on their id’s from the database.

Now, how can a perform a preg_replace on that string to see if i have something like ##article-6## and extract only that number?

Is this idea a good one? Can i do it in a better way?

EDIT:

I did it like this:

$post_content = preg_replace_callback('/##article-(\d+)##/', function($matches){$args = explode(',', $matches[1]); // separate the arguments
return call_user_func_array('article_seo_url', $args); /* pass the arguments to article_seo_url function*/ }, $post_content);

Using this code i can also replace multiple url’s

Answer 1

If you want to do a preg_replace, you’d want to use a regex such as /##article-(\d+)##/ and do something like this:

$string = 'Lorem Ipsum available, <a href="##article-6##">but the majority</a> have suffered alteration in some form, by injected humour.';
$string = preg_replace('/##article-(\d+)##/', 'link/to/article/with/id/$1.html', $string);

would result in $string being:

Lorem Ipsum available, <a href="link/to/article/with/id/6.html">but the majority</a> have suffered alteration in some form, by injected humour.