read cookie in javascript php

<?php
$expire=time()+60*60*24*30;
setcookie("user", "Fast conversion It Solution", $expire);

//print_r($_COOKIE['user']);
 ?>
 <script>
function readCookie(name) {
//var cookiename = name + "=";


document.write(document.cookie);
document.write("<br>");


}

document.write("n " + readCookie('user'));
</script>