Question

I’m importing data from a csv and I’ve been looking high and low for a particular regular expression to remove trailing slashes from domain names without a directory after it. See the following example:

example.com/ (remove trailing slash)
example.co.uk/ (remove trailing slash)
example.com/gb/ (do not remove trailing slash)

Can anyone help me out with this or at least point me in the right direction?

Edit: This is my progress so far, I’ve only matched the extension at the moment but it’s picking up those domains with trailing directories.

[a-z0-9\-]+[a-z0-9]\/[a-z]

Many thanks

Answer 1

I don’t know how it would compare to a regular expression performance-wise, but you can do it without one.

A simple example:

$string = rtrim ($string, '/');
$string .= (strpos($string, '/') === false) ? '' : '/';

In the second line I’m only adding a / at the end if the string already contains one (to separate domain from folder).

A more solid approach would probably be to only rtrim if the first / found, is the last character of the string.