学步园

<?php
	print "Opening the connection to the database server<br />";
	mysql_connect("localhost","root","password");
	print "Select a database<br />";
	$result = mysql_select_db("phpweb");
	if( $result)
	{
		print "Database selected successfully";
	}
	else
	{
		print "There was problem with the database selection<br />";
	}
?>

一旦选择成功，全部查询都是针对这个数据库进行的。