<?php
/********************************
*** 功能：选择指定的MySQL数据库
*********************************/
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>选择数据库</title>
</head>
<body background="image/bg.JPG">
<table align="center"><tr><td>
<img src="image/banner.jpg">
</td></tr><tr><td background="image/head.JPG" align="center">
<form action="" method="post">
<select name="select">
<option value="1" selected="selected">请选择数据库</option>
<!--连接数据库-->
<?php
$conn = mysql_connect("localhost","root","");
$rs = mysql_query("show databases");//查询操作
//将数据库名称以下拉列表的方式显示
while($rst = mysql_fetch_array($rs)){
$i = 0;
echo "<option value = ".$rst[$i].">".$rst[$i]."</option>";
$i ++;
}
?>
</select>
<input type="submit" name="sub" value="确定" />
</form>
</td></tr><tr><td background="image/head.JPG">
<?php
if(!empty($_POST["sub"])){
if($_POST["select"] == "1"){
echo "<script>alert(‘请选择数据库‘);</script>";
}else{
if(mysql_select_db($_POST["select"],$conn)){
echo "<script>alert(‘已经连接到指定的数据库‘);</script>";
mysql_close();
}else{
echo "<script>alert(‘出错了‘);</script>";
}
}
}
?>
</td></tr></table>
</body>
</html>
时间： 2024-08-02 21:26:35