Replace www in URL with wildcard subdomain

Question

Is there any way to

www.domain.com/new-mexico/albuquerque/businessname-513526.html

is replaced with:

businessname.domain.com/new-mexico/albuquerque/businessname-513526.html

This means "www" will be replaced by the business name. This should be simple but I don't know how to implement it.

Answer 1

Sounds like you may need to use str_replace

$old_domain = "www.domain.com/new-mexico/albuquerque/businessname-513526.html";
$new_domain = str_replace("www.", "businessname.", $old_domain); //我选择在www之前加上点号，以防URL中还有另一个www