今天的面试题

<?php

	$mysql_sname = 'localhost';

	//用户名

	$mysql_uname = 'root';

	//密码

	$mysql_upwd = '12345';

	//数据库名

	$mysql_dbname = 'test';

	//链接数据库

	$conn = mysql_connect($mysql_sname,$mysql_uname,$mysql_upwd) or die("数据库链接失败！");

	//选择数据库

	$db_select = mysql_select_db($mysql_dbname, $conn);

	//查询

	$sql_s = "select * from a";

	//执行sql

	$result = mysql_query($sql_s,$conn);

	//显示查询结果

	while($row = mysql_fetch_row($result)){

		echo "<br/>";

		for($i=0;$i<count($row);$i++){

			echo "<td>".$row[$i]."</td>";

		}

	}

	//删除

	$sql_d = "delete from a where id=8";

	mysql_query($sql_d,$conn);

	//增加

	$sql_i = " INSERT into a VALUES ( '', 'asd', '666') ";

	mysql_query($sql_i,$conn);

	//修改

	$sql_u = "update a set name = 'sdfsdfsdf' where id =7 ";

	mysql_query($sql_u,$conn);

	mysql_close($conn);

?>