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I want to download a file with PHP by AJAX
This is my code, maybe someone can help why this wont work?

Download File: 

$owner = $_SESSION['login_email'];
if (isset($_GET['filename'])) {

    if ($_GET['filelocation'] == 'undefined') {
        $dir_end = 'files/';
        $dir = '../data/' . $owner . '/' . $dir_end;
    } else {
        $dir_end = $_GET['filelocation'];
        $dir = '../data/' . $owner . '/' . $dir_end;
    }

    if (strpos($dir_end, '../') === false) {
        $db_filename = mysqli_real_escape_string($mysqli, $_GET['filename']);
        $db_filelocation = mysqli_real_escape_string($mysqli, $dir_end);
        $db_fileowner = mysqli_real_escape_string($mysqli, $owner);

        foreach ($mysqli->query("SELECT * FROM files WHERE filelocation='" . $db_filelocation . "' AND file='" . $db_filename . "' AND fileowner='$db_fileowner'") as $row) {
            $db_filemark = $row['filemark'] . '-';
        }

        $filename = $db_filename;
        $dlfile = $dir . $db_filemark . $db_filename;

        if (file_exists($dlfile)) {
            header('Content-type: application/force-download');
            header('Content-Transfer-Encoding: Binary');
            header('Content-length: ' . filesize($dlfile));
            header('Content-Disposition: attachment; filename=' . $db_filename);
            readfile($dlfile);
            echo 'success.';
        } else {
            echo 'error.';
        }
    } else {
        echo 'error.';
    }
} else {
    echo 'error.';
}
?>

JavaScript File:

$(document).on('click', '.browse-hover-download', function(e) {
    var filename = $(this).parent().find('p').text();
    var filelocation = current_path;
    var xmlhttp;
    if (window.XMLHttpRequest) {
        xmlhttp = new XMLHttpRequest();
    } else {
        xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
    }
    xmlhttp.onreadystatechange = function() {
        if (xmlhttp.readyState == 4 && xmlhttp.status == 200) {
            //document.getElementById("txtHint").innerHTML=xmlhttp.responseText;
        }
    }
    xmlhttp.open('GET', 'php/download.php?filename=' + filename + '&filelocation=' + filelocation);
    xmlhttp.send();
    e.stopPropagation();
});

I've got no idea why it wouldn't work, all my other AJAX work perfectly, maybe anyone of you can help...

Maybe it could be it doesn't work because i'm using header's and readfile in PHP and AJAX can't fetch that information.... If someone know's a better way how to do this let me know. :)

Bentley
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  • You can't download with ajax. Load the php into a hidden I frame instead – Steve Apr 27 '14 at 19:30
  • Try use jQuery: http://stackoverflow.com/questions/4545311/download-a-file-by-jquery-ajax – Piotr Olaszewski Apr 27 '14 at 19:37
  • what is `xmlhttp.onreadystatechange` supposed to do, btw? the only active code in it is commented out. this is a no-op javascript file. – Michael Apr 27 '14 at 20:02
  • @Michael, it already says... when the xmlhttp request is ready... you can alert the user that for example, the file succesfully has been downloaded, or uploaded, or when the user changed a directory name and it succeeded... Read on AJAX & XMLHTTP Request's for more information – Bentley Apr 28 '14 at 05:17

0 Answers0