How to track sender's IP with Form element

How To
1

Hi guys. I want to show the sender’s IP in my form message. It seems no existing field I can use.

Regards,
Kevin Pan

2

I also want to know this.
how to know the sender IP and the submmit URL?

3

create function

	function user_ip_address() {
		$ip_address = '';

		if ( ! empty( $_SERVER['HTTP_CF_CONNECTING_IP'] ) ) {
			// Cloudflare
			$ip_address = $_SERVER['HTTP_CF_CONNECTING_IP'];
		} elseif ( ! empty( $_SERVER['HTTP_X_FORWARDED_FOR'] ) ) {
			// Forwarded for
			$ip_address = $_SERVER['HTTP_X_FORWARDED_FOR'];
		} elseif ( ! empty( $_SERVER['REMOTE_ADDR'] ) ) {
			// Default
			$ip_address = $_SERVER['REMOTE_ADDR'];
		}

		// Validate IP address - compatible with both IPv4 & IPv6
		$ip_address = filter_var( $ip_address, FILTER_VALIDATE_IP );

		return $ip_address;
	}

and use {echo:user_ip_address}

submit url - {post_url}

2 Likes