怎样下传一个csv文件更新数据库

<p>please select a scv file to upload</p>
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                <br /><form action="index.php" method="post"><br />	<input type="file" name="scv"  /><br />	<input type="submit" value="submit" /><br /></form><br /><?php <br />	mysql_connect('localhost','root','admin');<br />	mysql_select_db('linjuming');<br />	// how to upload a scv file and insert or update the "csv" table?<br />	<br />?>