WangGuard - Admin Email Alerts for WordPress

wg-change-email-alert.php

<?php 

//** Admin Email Alerts for WordPress
// Original @ Josh Lobe - WP Admin Alerts For Profile Updates
// http://pastebin.com/XY4bgiZX

// WangGuard version @ Rafa Poveda 
// https://gist.github.com/bi0xid/cd1896f7be881d02398f

/*
 * First, we must retrieve the 'old' values from the database
 */
function wangguard_get_values() {
	
	global $current_user, $wg_old_user;  // Set global variables
	get_currentuserinfo(); 
	$wg_old_user = $current_user;  // Set a variable equal to current user info
	global $wg_old_user;  // Define global variable to be used in function notify_admin_on_update()

}
add_action('init','wangguard_get_values');  // Add to init so we know our values are process BEFORE 'update_profile' hook
	
/*
 * Now we can process the 'update_profile' hook data and compare values
 */

function wangguard_notify_admin_on_update(){
	
	global $current_user, $wg_old_user;  // Set global variables
	get_currentuserinfo();  
	$send_mail = false; // We are sending a mail if the current mail is changing

		// Set email 'to' and 'subject' fields
		$to = get_option( 'admin_email' );  // Get the admin email address, and set it to the 'to' email field
		$subject = __( 'WordPress Admin Notification - User Email Update!' );  // Set the 'subject' email field
		
		// Now we can begin building the email message content
		$message =  sprintf( __( '<strong>Hello WordPress Admin,</strong>
			<p>The user <em><strong>%s</strong></em> has updated their email information:</p><p></p>' ), $current_user->display_name );			
				// If the processed post data DOES NOT match the currently stored database value (The user has updated the field)
				if($_POST['email'] != $wg_old_user->user_email) {
					$message .= sprintf( __( '<p><strong>The e-mail has changed:</strong></p>
					<p>Old Value: %s<br />
					New Value: %s</p>'), $wg_old_user->user_email, $_POST['email'] );
					$send_mail = true; //send the email
				}
		
		// Let's build a function for setting email type to html
		function set_html_content_type() {
			return 'text/html';
		}
		
		add_filter( 'wp_mail_content_type', 'set_html_content_type' );  // Let's set WP mail to html.. so we can make the email look "pretty"
		if ( $send_mail == true ) 
			@wp_mail( $to, $subject, $message);  // Send the mail if neccessary
		
		remove_filter( 'wp_mail_content_type', 'set_html_content_type' );  // Don't forget to remove the html filter, so as not to interfere with other plugins/themes.
	
}	

add_action( 'personal_options_update', 'wangguard_notify_admin_on_update' );  // Hook to user update profile button
add_action( 'edit_user_profile_update','wangguard_notify_admin_on_update');  // Hook to edit user update profile button