Josh Lobe - WP Admin Alerts For Profile Updates

//** Admin Email Alerts for WordPress

/*
 *
 * First, we must retrieve the 'old' values from the database
 */
function get_values() {

    global $current_user, $jwl_old_metadata;  // Set global variables
    get_currentuserinfo();  // Just as the name suggests
    $jwl_old_metadata = $current_user;  // Set a variable equal to current user info
    global $jwl_old_metadata;  // Define global variable to be used in function notify_admin_on_update()
}
add_action('init','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 notify_admin_on_update(){

    global $current_user, $jwl_old_metadata;  // Set global variables
    get_currentuserinfo();  // Just as the name suggests

    // The following is an 'if' statement.  It can be commented out if you would like to NOT receive email alerts when admins are updating profiles
    // If you would like to use it, and comment it out... don't forget the closing bracket below that's also commented out

    // if (!current_user_can( 'administrator' )){// avoid sending emails when admin is updating user profiles

        // 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 Profile Update!';  // Set the 'subject' email field

        // Now we can begin building the email message content
        $message = "<Strong>Hello WordPress Admin,</strong>";
        $message .= "<p>The user, <em><strong>" .$current_user->display_name . "</strong></em>, has updated their profile with the following information:</p><p></p>";

        // Let's set an array of default WP values we DO NOT want to be alerted if they don't match
        $wp_defaults_array = array('_wpnonce','_wp_http_referer','from','checkuser_id','admin_bar_front','action','submit','email','user_id');

        // Iterate through each value that is processed during 'update_profile'.
        foreach ($_POST as $key => $value) {
            // If our value is NOT in the array above, process the data
            if(!in_array($key, $wp_defaults_array)) {
                $constant = $key;  // Set constant for comparison sake

                // If the processed post data DOES NOT match the currently stored database value (The user has updated the field)
                if($_POST[$constant] != $jwl_old_metadata->$constant) {
                    $message .= "<p><strong>".$key.":</strong><br />";
                    $message .= "Old Value: ".$jwl_old_metadata->$constant."<br />";
                    $message .= "New Value: ".$_POST[$constant]."</p><p></p>";
                }
            }
        }

        // 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"
        @wp_mail( $to, $subject, $message);  // FINALLY, send the darn message!!
        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.

    // Below is the bracket that should be commented out if you do not wish to receive email alerst when an admin updates a profile.

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