PHP preg_match 获取我的 url 的一部分

Question

I'm trying to get a part of my url using PHP preg_match but it's not working. I followed some instructions but no luck.

This is what I have so far.

$url = 'http://chris.mydomain.com/d/3542re6s/somthing.html';
$pattern = '/\/\/(sub1\.)?mydomain.com\/(\d+)($|\/)/';
preg_match($pattern, $url, $matches);
if (count($matches)){
  return $matches[2];
}

I also need it to validate for chris, terry and jack only.

UPDATED:

eg: chris.mydomain.com terry.mydomain.com jack.mydomain.com

And I need to get the second query

eg:

chris.mydomain.com/d/3542re6s/somthing.html

would return

3542re6s

Any help is very much appreciated.

Thanks in advance C

Answer 1

Your regular expression is missing the /d/ directory. Also, since the next level contains both numbers and letters, you can't use \\d+ to match it. Try this:

$pattern = '#//(?:(?:chris|terry|jack)\.)?mydomain\.com/d/([^/]+)(?|/)#';

DEMO at regex101
PHP demo at ideone

And when you're writing a regular expression to match pathnames, I suggest using a delimiter other than / so you don't have to escape all the slashes in the regexp; I used # above.