PHP - Removing a forward-slash from the tail-end of an URL

Question

Hello,

The code below removes "www.", etc. from the beginning of websites that are entered into a database. It works great.

Is there a way I could use similar code to remove a forward-slash from the tail-end of a website that is entered into the same database?

Thanks in advance,

John

$remove_array = array('http://www.', 'http://', 'https://', 'https://www.', 'www.');
$site = str_replace($remove_array, "", $_POST['site']);

Answer 1

$site = preg_replace('{/$}', '', $site);

This uses a relatively simple regular expression. The $ means only match slashes at the end of the string, so it won't remove the first slash in stackoverflow.com/questions/. The curly braces {} are just delimiters; PHP requires matching characters and the front and back of regular expressions, for some silly reason.

Answer 2

John was the first and I think his solution should be preferred, because it's way more elegant, however here is another one:

$site = implode("/", array_filter(explode("/", $site)));

Update

Thx. I updated it and now even handles things like this

$site = "///test///test//"; /* to => test/test */

Which probably makes it even cooler than the accepted answer ;)

Answer 3

You can pass a string of characters that you want trimmed off of a string to the trim family of functions. Also, you could use rtrim to trim just the end of the string:

$site = rtrim($site, "/");

Answer 4

The most elegant solution is to use rtrim().

$url = 'http://www.domain.com/';

$urlWithoutTrailingSlash = rtrim($url, '/');

EDIT

I forgot about rtrim();

You could also play around parse_url().