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HomeBackend DevelopmentPHP Tutorial[转]php初级教程(五)php表单处理

现在开始介绍php的表单处理,这里我要大概介绍一下http的两种信息发送方式,get和post。举个简单的例子.http://host/1.php?id=6&name=cosbeta那么个这个6就是通过get发送给服务器端的,服务器的php脚本会将此变量放在$_GET数组中。所以此时我们这样便可以取出数值:$id = $_GET[’id’];//id=6 $name = $_GET[’name’];//cosbeta

那么我们可以看看用户如何将数据传送给服务器。举例说明(不再用了,切换来切换去太累了)。首先在客户端有这样一个表单,注意,如果要post数据,除了ajax post外(后面的高级进阶我会简单介绍一下如何写ajax程序,如果你想学,赶快抓紧去熟悉javascript吧),在html中输入框必须在

之间,不能漏掉了,如果不小心漏掉一个,你可能检查很久都检查不出问题,因为php中总是无法取出post过来的数值,我就曾经漏掉过。下面开始举例。
代码login.html:

  用户:

密码:


对于上面的表单有几点说明: 如果你想在表单中上传文件,这个enctype=”multipart/form-data”不能没有,否则上传会失败; method=post表示通过post方式提交表单,这样你的浏览器地址栏上就不会出现类似id=xxx&name=xxx的地址样子了,你可以自行把post改成get试试。 对于如何制作需要的表单,你可以先用dreamweaver制作好你需要的表单,然后查看html代码,慢慢的你就会熟悉了 action表示将会提交给那个脚本来处理此表单。

下面是login.php的代码

$name = $_POST [ 'id' ]; //如果是get方式提交则用$_GET['id'],

//无法确定get还是post提交就用$name=$_REQUEST['id']

$pass = $_POST [ 'pass' ];

echo "用户名是:". $name. "密码是:". $pass;

//前面忘记介绍了,在php中连接字符串是用英语句号“.”来完成,

//如本行的例子


对于上面的例子,相关的说明都已经在注释里面了。

好了,现在在把这两个文件放到你计算机的服务器的根目录下,运行http://localhost/login.html,输入用户和密码,点击“GO”测试吧。

举一反三,关于表单的提交数据处理就说到这里,想要更加熟悉一点,赶快把我第一章介绍的php manual拿出来看看吧。

下一章将继续讲解post的相关文件处理……

 

引用地址:http://www.storyday.com/html/y2007/431_php-course-5.html

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