Prepared Statement in php Mysql

<?php

 $dbh = new PDO('mysql:host=localhost;dbname=test','root','');
$stmt = $dbh->prepare("INSERT INTO Writers (name) VALUES (:name)");
$stmt->bindParam(':name', $name);
$name = 'jeeva';
$stmt->execute();
$name = 'jeevanandham';
$stmt->execute();
?>