I just downloaded plupload and I have yet to install it.
Since you use it in prestashop you tell me how to install and configure it should?
in what folder? , in which position page ?
and what parameters to set?

many thanks
Christian

You just should define a global javascript variable, then you can use it in plupload scripts.

1. HTML form and Upload form view file:

<script type="text/javascript">
var myvalue = "<?php echo $dynamic_variable ?>";
</script>

2. In "jquery.plupload.queue.js", find

 m.append('<li id="'+o.id+'"> .... 

... This is where it begins to create rows specific for every file. You can define anything here that is specific to this file. Like, i put a textarea, a hidden input, an a select box. You should give them unique name and id. Here is myexample:

m.append('<li id="'+o.id+'"><div class="plupload_file_name"><span>'+o.name+'</span><br/><br/><select name="album['+o.id+']">'+albumAppend+'</select></div><span class="plupload_preview"></span><div class="plupload_desc"><img id="preview_'+o.id+'" src="'+p_dir+"/"+userFolder+"/"+o.target_name+'" width="50" height="50" style="float: left;"/><textarea cols="50" rows="3" name="story['+o.id+']" style="margin-left: 10px; width: 300px;">Story of this photo: ['+o.name+']</textarea><input type="hidden" name="fileId[]" value="'+o.id+'"/><input type="hidden" name="userFolder" value="'+userFolder+'"/><input type="hidden" name="fileName['+o.id+']" value="'+o.target_name+'"/></div><div class="plupload_file_action"><a href="#"></a></div><div class="plupload_file_status">'+o.percent+'%</div><div class="plupload_file_size">'+plupload.formatSize(o.size)+'</div><div class="plupload_clearer">&nbsp;</div>'+l+"</li>");

In this example of mine, "albumAppend", "userFolder" variables are produced beforehand as global javascript variables via PHP. (see, step 1)

Then i give them specific names and ids; like:

<input type="hidden" value="'+myClientFolder+'" name="clientFolder['+o.id+']" />

This way, you can read the POST value in PHP like this:

<?php

$clientFolder = $_POST["clientFolder"][$id];

?>

What I wrote above is for the "save form" process. For upload, you can send a querystring to the UPLOAD URL:

$("#uploader").pluploadQueue({
        // General settings
        runtimes : 'gears,flash,silverlight,browserplus,html5',
        url : 'upload.php?folder=<?php echo $myClientFolder; ?>',
        max_file_size : '10mb',
        chunk_size : '1mb',
        unique_names : true,

How does it sound now?

This is my code

// Setup flash version
            $("#flash_uploader").pluploadQueue({

                // General settings
                runtimes : 'flash',
                url : '/themes/Web-To-Print-5/plupload/examples/upload.php',
                max_file_size : '10mb',
                chunk_size : '1mb',
                unique_names : false, //default set true
                multi_selection : true,
               
                // PreInit events, bound before any internal events
                //preinit: {
                    //Init: function(up, info) {
                        //log('[Init]', 'Info:', info, 'Features:', up.features);
                    //},
                   
                    //UploadFile: function(up, file) {
                        //log('[UploadFile]', file);
                            // You can override settings before the file is uploaded
                            // up.settings.url = 'upload.php?id=' + file.id;
                            // up.settings.multipart_params = {param1: 'value1', param2: 'value2'};
                    //}
                //},

               
               
                //Multipart for folder generation
                multipart_params: {subdirname : "sottocartella"},
                //multipart_params: {subdirname : ""}, //Dynamic Folder??

How can I set a javascript variable inside multipart_params?