You can’t run PHP code with Javascript. When the user recieves the page, the server will have evaluated and run all PHP code, and taken it out. So for example, this will work: Because server will have evaluated it to this: However, you can’t perform any operations in PHP with it. This: Will simply have … Read more
You can do this in native JavaScript. You’ll have to parse your data into correct CSV format as so (assuming you are using an array of arrays for your data as you have described in the question): or the shorter way (using arrow functions): Then you can use JavaScript’s window.open and encodeURI functions to download the CSV file like so: … Read more
Use beforeSend: http://www.w3.org/TR/XMLHttpRequest/#the-setrequestheader-method http://api.jquery.com/jQuery.ajax/