The async property specifies whether downloading of an XML file should be handled method returns the control to the caller before the download is complete. Cloud � Certification � Community � Businesses � News � Download A message handler is a PHP callable, the recommended way to create it is to create a Thanks to Messenger's Flex recipe, your .env file already has a few examples. config/packages/messenger.yaml framework: messenger: transports: async: XML� Ajax is a set of web development techniques using many web technologies on the client side to create asynchronous web applications. File formats � JavaScript In practice, modern implementations commonly utilize JSON instead of XML. async function doAjax() { try { const res = await fetch('send-ajax-data.php');� 10 Dec 2019 Overview; Try it yourself; Getting started; Creating a table in MySQL; Populating the table; Outputting data as XML using PHP. Using PHP's Change this depending on the name of your PHP or XML file