如何获得表单的参数值？？？

[qxh0724]

<form name="form1" method="post" action="index.php?action=add">
<input name="category_id" type="text" id="category_id">
<input name="name" type="text" id="name">
<input type="submit" name="Submit" value="提交">
</form>


我提交表单到index.php 的时候如何根据“index.php?action=add ” 里action这个值来判断接下来的操作？？

我知道ASP里是这样做的：
if request("action")="add" then
………………
elseif request("action")="delete" then
……………………
end if

但是不知道PHP里是怎么弄的？？？

请各位大侠指教！谢谢

[spacet]

<?php
if ($_GET['action'] == "add") {
$category_id = $_POST['category_id'];
$name = $_POST['name'];
//do what you want to do
}
elseif ($_GET['action'] == "delete") {
//do what you want to do
}
?>

[mouzhi]

spacet(空格t) 说的很对。

用$_GET[变量名称]（通过链接传过来的,比如：index.php?id=***）和$_POST[变量名称](通过表单传过来的)。

[qxh0724]

没用啊，我试过了
提示错误：

Notice: Undefined index: action in E:\myPhp\form_add.php on line 35

Notice: Undefined index: action in E:\myPhp\form_add.php on line 40

分别对应这两行

if ($_GET['action'] == "add") {

elseif ($_GET['action'] == "delete") {

[spacet]

把你的代码贴出来

[qxh0724]

index.php:

<form name="form1" method="get" action="form_add.php?action=add">
<input name="category_id" type="text" id="category_id">
<input name="name" type="text" id="name">
<input type="submit" name="Submit" value="提交">
</form>



form_add.asp：



if ($_GET['action'] == "add") {
echo $_GET['category_id'];
echo $_GET['name'];
//do what you want to do
}
elseif ($_GET['action'] == "delete") {
//do what you want to do
}

[qxh0724]

兄弟看一下怎么回事？？
还能QQ交流或MSN

qq:54839720

msn:[e-mail]

[spacet]

form_add.asp ？？？

[qxh0724]

打错后缀了 .php

这个不影响！：）

[qishiwobuguai]

<?php $value="add"; ?>
<form name="form1" method="get" action="form_add.php">
<input type=hidden name=action value=<?php echo $value; ?>>
<input name="category_id" type="text" id="category_id">
<input name="name" type="text" id="name">
<input type="submit" name="Submit" value="提交">
</form>

<?php
if ($_GET['action'] == "add") {
$category_id = $_GET['category_id'];
$name = $_GET['name'];
//do what you want to do
}
elseif ($_GET['action'] == "delete") {
//do what you want to do
}
?>

[spacet]

index.php改成这样:

<form name="form1" method="get" action="form_add.php">
<input name="category_id" type="text" id="category_id">
<input name="name" type="text" id="name">
<input name="action" type="hidden" id="action" value="add">
<input type="submit" name="Submit" value="提交">
</form>

[qxh0724]

谢谢结分！