ajax multiple file upload with php
<p>Hey I am uploading files to a chosen folder and right now I have the ability to select and upload just one file.  I know how to handle multiple files in php but I am not sure how to send all of the files over through AJAX. Thanks for any help you can offer</p>

<p>AJAX</p>

<pre><code> function submitForm() {
            console.log("submit event");
            var fd = new FormData(document.getElementById("fileinfo"));
            fd.append("label", "sound");
            fd.append('label', document.getElementById('selected_folder').value);
            $.ajax({
              url: "upload.php",
              type: "POST",
              data: fd,
              enctype: 'multipart/form-data',
              processData: false,  // tell jQuery not to process the data
              contentType: false   // tell jQuery not to set contentType
            }).done(function( data ) {
                console.log("PHP Output:");
                console.log( data );
                alert("upload success!")
            });
            return false;
        }
</code></pre>

<p>PHP</p>

<pre><code>&lt;?php
if ($_POST["label"]) {
    $subfolder = $_POST["label"];
}


$allowedExts = array("gif", "jpeg", "jpg", "png");
$temp = explode(".", $_FILES["file"]["name"]);
$extension = end($temp);
if ((($_FILES["file"]["type"] == "image/gif")
|| ($_FILES["file"]["type"] == "image/jpeg")
|| ($_FILES["file"]["type"] == "image/jpg")
|| ($_FILES["file"]["type"] == "image/pjpeg")
|| ($_FILES["file"]["type"] == "image/x-png")
|| ($_FILES["file"]["type"] == "image/png"))
&amp;&amp; ($_FILES["file"]["size"] &lt; (10000*1024))
&amp;&amp; in_array($extension, $allowedExts)) {
    if ($_FILES["file"]["error"] &gt; 0) {
         // echo "Return Code: " . $_FILES["file"]["error"] . "&lt;br&gt;";
    } else {
        $filename = $_FILES["file"]["name"];
        echo "Upload: " . $_FILES["file"]["name"] . "&lt;br&gt;";
        echo "Type: " . $_FILES["file"]["type"] . "&lt;br&gt;";
        echo "Size: " . ($_FILES["file"]["size"] / 1024) . " kB&lt;br&gt;";
        echo "Temp file: " . $_FILES["file"]["tmp_name"] . "&lt;br&gt;";



        if (file_exists("uploaded/".$subfolder .'/'. $filename)) {
            //already exists 
        } else {
            move_uploaded_file($_FILES["file"]["tmp_name"],
            "uploaded/".$subfolder .'/'. $filename);
            // "Stored in: " . "uploaded/".$subfolder .'/'. $filename;
        }
    }
} else {
    echo "Invalid file";
}
?&gt;
</code></pre>