Upload files not working using jQuery File Upload

Question

Problem:

To set session variable and redirect user to different PHP-page once upload of .txt file has been completed using jQuery File Upload.

HTML code (upload.php):

<!-- The fileinput-button span is used to style the file input field as button -->
<span class="btn btn-success fileinput-button">
    <i class="glyphicon glyphicon-plus"></i>
    <span>Add files...</span>
    <!-- The file input field used as target for the file upload widget -->
    <input id="fileupload" type="file" name="files[]" multiple>
</span>
<br>
<br>
<!-- The global progress bar -->
<div id="progress" class="progress">
    <div class="progress-bar progress-bar-success"></div>
</div>
<!-- The container for the uploaded files -->
<div id="files" class="files"></div>

jQuery code (upload.php):

<script>    
    $(function () {
        'use strict';
        // Server-side upload handler:
        var url = 'process.php';

        $('#fileupload').fileupload({
            url: url,
            autoUpload: true,
            acceptFileTypes: /(\.|\/)(txt)$/i,
            maxFileSize: 5000000, // 5 MB
            done: function (e, data) {
                $(this).delay(2000, function(){
                    window.location = "explorer.php";
                });
            },
            progressall: function (e, data) {
                var progress = parseInt(data.loaded / data.total * 100, 10);
                $('#progress .progress-bar').css(
                    'width',
                    progress + '%'
                );
            }
        }).prop('disabled', !$.support.fileInput)
            .parent().addClass($.support.fileInput ? undefined : 'disabled');
    });
</script>

PHP upload script (process.php):

<?php
    session_start();

    $folder      = 'upload';

    if (!empty($_FILES))
    {
        // Set temporary name
        $tmp    = $_FILES['files']['tmp_name'];

        // Set target path and file name
        $target = $folder . '/' . $_FILES['files']['name'];

        // Upload file to target folder
        $status = move_uploaded_file($tmp, $target);

        if ($status)
        {
            // Set session with txtfile name
            $_SESSION['txtfile'] = $_FILES['files']['name'];
        }
    }
?>

Desired output:

• Text file should be uploaded to folder /upload - which currently has chmod 777
• Session of text file name should be assigned to the variable $_SESSION['txtfile']
• Redirect user once upload is done to the file "explorer.php"

EDIT: SOLVED. Final code above!

Answer 1

For starters...

Notice your input name is files[] and has attribute multiple . This means that you are sending an array of files to the server so to reference them in php, you'll need something like this:

$_FILES['files']['name'][0]

for the first file.

Also, I have found that move_uploaded_file() likes full paths for the destination, try tacking on $_SERVER['DOCUMENT_ROOT'] .

To send information back to jQuery you would want to use echo json_encode() like so...

echo json_encode(array(
    'status' => $status,
    'message' => 'your message here'
));

In your done function the data can be accessed like this:

done: function(e, data){
     console.log(data.status);
     console.log(data.message);
}