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PHP页面间传递参数实例代码

Jun 13, 2016 pm 12:28 PM
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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:


 

 
 
 
 
 
Depart Name:

 
 
 
 
 

    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 "

"; 
echo ""; 
while($row = mysql_fetch_object($rs)) echo ""; 
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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