$XML_VERISI = '<?xml version="1.0" encoding="UTF-8"?> 
					<Message xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema"> 
						<APIVersion>1.0.0</APIVersion> 
						<OkUrl>https://site.com/basarili</OkUrl> 
						<FailUrl>https://site.com/basarisiz</FailUrl> 
						<HashData>112223445566</HashData> 
						<MerchantId>12345</MerchantId> 
					</Message>'; 
	
	@header("Content-type: text/xml");	
	echo $XML_VERISI;