Regex to remove string inside an URL

Question

I have a URL where I pass the base auth within the URL, example:

https://user:[email protected]

What would be a regex to remove everything between the last / up to the @?

Example:

https://user:[email protected]

Would become:

https://dev.google.com

I tried some regex but my knowledge is still basic for this subject.

I'll use a PHP function to do a replace.

Which programming language? Do not comment, just add a proper tag. — Nikhil Vartak
– Nikhil Vartak, Commented Sep 26, 2018 at 17:43
Is there a reason you're using a regexp instead of parse_url()? — Barmar
– Barmar, Commented Sep 26, 2018 at 17:45
@Barmar no reason at all, I'm actually new to php so I'm not familiar with parse_url() yet, I'll take a look on this, thanks for the suggestion! — sdf68dsf7
– sdf68dsf7, Commented Sep 26, 2018 at 17:50

Barmar · Accepted Answer · 2018-09-26 17:44:25Z

1

preg_replace('#/[^/]*@#', '/', $url);

Breakdown:

So this matches everything from a / to the next @, with no / between them. Then it's replaced with just the slash.

However, it would probably be better to use parse_url() rather than ad hoc parsing with a regexp.

answered Sep 26, 2018 at 17:44

Barmar

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3 Comments

Thanks it solved my problem, I'll accept the answer as soon as it let me :)

And what about url's like example.com/@username/profile?

@Philipp That's why I recommended using a URL parser rather than ad hoc parsing, since it will deal with corner cases better.

Nikhil Vartak · Accepted Answer · 2018-09-26 18:07:38Z

1

Using parse_url() does the job:

$url = 'https://user:[email protected]';
$scheme = parse_url($url, PHP_URL_SCHEME);
$host = parse_url($url, PHP_URL_HOST);
print $scheme."://".$host;

answered Sep 26, 2018 at 18:07

Nikhil Vartak

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