PHP 连接mysql数据库

<?php
	$dbhost = 'localhost:3306';
	$dbuser = 'root';
	$dbpass = 'root';
	$conn = mysql_connect($dbhost, $dbuser, $dbpass);
	if(! $conn )
	{
	  echo 'Connect failure';
	}
	echo 'Connected successfully';
	mysql_close();
?>