Wordpress dynamically set site url for local development

wp-config.php.local

<?php
/*
 * Still requires the nginx server_name to be set to one of these
 * For names, still requires hosts file to be set
 * Just updates one thing for you automatically so if your local ip changes you don't have to change so many things
 *
 */
$ip = $_SERVER['SERVER_ADDR'];
$identifiers = array( $_SERVER['HTTP_HOST'], $_SERVER['REMOTE_ADDR'], $_SERVER['SERVER_NAME'] );
$aliases = array('local.site.org', $ip . '.xip.io', $ip, '127.0.0.1', '127.0.0.1.xip.io');

foreach($identifiers as $key => $identity){
    if(!empty($identity) && in_array($identity, $aliases)){
        define('WP_HOME', 'https://' . $identity);
        define('WP_SITEURL', 'https://' . $identity);
        error_log("Setting to: " . WP_HOME);
        break;
    }
}
/*
 * Nginx server block for the secure beta site
 * Add these to the server name:
 * 192.168.1.123.xip.io
 * 192.168.1.123
 */
?>