Hide Shipping methods when free shipping is available

functions.php

add_filter('woocommerce_package_rates', 'wf_hide_shipping_methods_when_free_shipping_is_applicable', 10, 2);
			function wf_hide_shipping_methods_when_free_shipping_is_applicable($rates, $package)
				{
					
					foreach($rates as $key => $value) {
												
						if (strpos($key , 'free_shipping') !== false) {
											
							foreach($rates as $ratekey => $ratevalue) {
									
								if (strpos($ratekey, 'free_shipping') !== false) {
									
									continue;
								}
                                                                
								unset($rates[$ratekey]);		
							}
						
						}
					}
					
					return $rates;
				}