PHP 및 jQuery에서 다중 파일 업로드를 구현하는 방법은 무엇입니까?

<input id="myfile" type="file" name="myfile" multiple=multiple/>

for (var i = 0, len = document.getElementById('myfile').files.length; i < len; i++) {
    fd.append("myfile", document.getElementById('myfile').files[i]);                
}

<code class="php">$target = "uploadfolder/";
// for($i=0; $i <count($_FILES['myfile']['name']); $i++){
    if(move_uploaded_file($_FILES['myfile']['tmp_name'], $target.$_FILES['myfile']['name'])) { 
        echo 'Successfully copied'; 

    }else{       
        echo 'Sorry, could not copy';
    }   
// } 

<code class="php">foreach ($_FILES as $key) {
    if($key['error'] == UPLOAD_ERR_OK ){
        $name = $key['name'];
        $temp = $key['tmp_name'];
        $size= ($key['size'] / 1000)."Kb";
        move_uploaded_file($temp, $path . $name);
        echo "
            <div>
                <h1>File Name: $name</h1><br />
                <h1>Size: $size</h1><br />
                <hr>
            </div>
            ";
    }else{
        echo $key['error'];
    }
}