Get the real IP address of visitors after using CDN on WordPress website

WordPress seems to use REMOTE_ADDR when storing IP addresses in the database, so that the comments in the database are all from various CDN IP address from the server. The article originates from a two-day blog- https://2days.org/85180.html

stay wp-config.ph The following code can be added to the p file to obtain CDN The real IP address of the post visitor. The core of this function is to use the resolved HTTP_X_FORWARDED_FOR replace REMOTE_ADDR 。 The article originates from a two-day blog- https://2days.org/85180.html

 //WordPress obtains the real IP address of visitors after using CDN if( !empty($_SERVER['HTTP_X_FORWARDED_FOR']) ) { $get_HTTP_X_FORWARDED_FOR = explode(',', $_SERVER['HTTP_X_FORWARDED_FOR']); $_SERVER['REMOTE_ADDR'] = trim($get_HTTP_X_FORWARDED_FOR[0]); }

  The article originates from a two-day blog- https://2days.org/85180.html

This code can be used in PHP to obtain the customer's real IP address, even when using CDN. It checks HTTP_X_FORWARDED_FOR Header. If it exists, its value will be decomposed into a comma separated list, and the first IP address will be taken as the real IP address of the client. Note that this method is not always accurate, because the client can forge this header, but it is usually reliable. The article originates from a two-day blog- https://2days.org/85180.html

Or you can use the following PHP code to obtain the real IP address of visitors in WordPress: The article originates from a two-day blog- https://2days.org/85180.html

 function get_real_ip_address(){ if (isset($_SERVER["HTTP_CF_CONNECTING_IP"])) { $_SERVER['REMOTE_ADDR'] = $_SERVER["HTTP_CF_CONNECTING_IP"]; $_SERVER['HTTP_CLIENT_IP'] = $_SERVER["HTTP_CF_CONNECTING_IP"]; } return $_SERVER['REMOTE_ADDR']; }

Add this code to the functions.php File, and then call the get_real_ip_address() Function. The article originates from a two-day blog- https://2days.org/85180.html

The above are the methods I found on the Internet. I hope they are useful. The article originates from a two-day blog- https://2days.org/85180.html The article originates from a two-day blog- https://2days.org/85180.html