Question

I am trying to create a regular expression to do the following (within a preg_replace)

$str = 'http://www.site.com&ID=1620';

$str = 'http://www.site.com';

How would I write a preg_replace to simply remove the &ID=1620 from the string (taking into account the ID could be variable string length

thanks in advance

Answer 1

You could use…

$str = preg_replace('/[?&;]ID=\d+/', '', $str);

I’m assuming this is meant to be a normal URL, hence the [?&;]. If that’s the case, the & should be a ?.

If it’s part of a larger list of GET params, you are probably better off using…

parse_str($str, $params);

unset($params['ID']);

$str = http_build_query($params);