Question

What is the best way to dump a long string (13,000+ characters) into a downloaded file with a name and an extension? Using jQuery, possibly ajax or php, if needed.

Thank you.

function output(){
$.ajax({
    dataType:"html",
    type:"POST",
    data:{
        content:$("#fileDump").contents().find('html').html(),
        fname:fileName
    },
    url:"filer.php",
    success: function(data){
        console.log(data);
    },
    error: function(data, status, error){
        console.log(status);
        console.log(error);
    }
});

}

Answer 1

PHP :

$content = "a long string";
file_put_contents($file, $content);
// force download
header('Content-Type: application/octet-stream');
header('Content-Disposition: attachment');
readfile($file);

Uses file_put_contents, header and readfile.

You can add a filename to the Content-Disposition if required :

header('Content-Disposition: attachment; filename="a_text_file.txt');