PHP页面间传递参数实例代码
首先给大家介绍如何通过表单传值查询数据。
任务目标:在表单中输入部门名,查询出相应部门的人员信息。
先创建search.php文件。
第一步,插入一表单,在其中包含一个输入框,一个提交按钮。search.php文件内容如下所示:
复制代码 代码如下:
Search
这样,我们就得到了一个数据提交页面,其含义就是,当我们点击Search按钮时,系统将名字为depart的输入框中所输入的数据通过Post的方法传递给search_result.php文件。
第二步,既然之前我们已经把值传送了出来,那么我们就要创建另一个页面文件来接收这一值。因为之前已经指定了是传送给search_result.php,那么我们就新建一个名为search_result.php的文件。
在这个文件中,首先连接上数据库并选择好数据源:
复制代码 代码如下:
$link=mysql_connect("localhost","root","之前的管理员密码");
if(! $link) echo "没有连接成功!";
else echo "连接成功!";
mysql_select_db("infosystem", $link);
?>
其次,接收search.php文件发出的参数,并生成SQL查询语句:
复制代码 代码如下:
$depart=$_POST["depart"];
$q = "SELECT * FROM info where depart='$depart'";
?>
最后,执行SQL语句并显示数据:
复制代码 代码如下:
mysql_query("SET NAMES GB2312");
$rs = mysql_query($q, $link);
echo "
部门 | 姓名 |
$row->depart | $row->ename |
mysql_close($link);
?>
通过查询,是不是得到大家所需要的数据了呢?当然,这只是一个最最基本的例子,接下来的几个话题,我会接着查询数据这个问题继续补充说明。

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