WP: Order by multiple meta keys in WP Query

wp-query-order.php

<?php
	/**
	 * This will allow to sort/filter according to different meta key values 
	 * ref: https://mathieuhays.co.uk/order-by-multiple-post-meta-in-wp-query/
	 * 
	 */
	 
	$args = array(
		'post_type' => 'my_post_type',
		'posts_per_page' => 10,
		'meta_query' => array(
                			'filter_key'    =>  array(
                                    		    	'key'       => 'filter_meta',
                                    				'value'     => $custom_value,
                                    				'compare'   => 'LIKE'
                                    			),
                			'custom_key'    =>  array(
                                    				'key'       => 'custom_meta',
                                    				'compare'   => 'EXISTS'
                                    			),
                			'other_key'     =>  array(
                                    				'key'       => 'other_meta',
                                    				'compare'   => 'EXISTS'
                                    			)
                		),
		'orderby'   =>  array(
                			'custom_key' => 'DESC',
                			'other_key' => 'ASC',
                			'title' => 'ASC'
                		)
	);
	
	$my_custom_query = new WP_Query( $args );
	
	if( $my_custom_query->have_posts() ){
		
		while( $my_custom_query->have_posts() ){
			$my_custom_query->the_post();
			
			// Do stuff
			the_title();
		}
	}
	
	wp_reset_postdata();