Detailed explanation of php+mysql paging principle and paging code

Results: Array ( [scheme] => http [host] => hostname [user] => username [pass] => password [path] => /path [query] => arg=value [fragment] => anchor ) ?>

4.$_SERVER["REQUEST_URI"] The request_url function is used to obtain the path of the current URL except the domain name. For example, the current page is www.baidu.com/php?id=1 echo $_SERVER["REQUEST_URI"]; result: php?id=1 5. PHP paging complete code