php中页面如何传递数据?

用google找到了:
php中 变量传递的几种办法变量传递的几种办法
一、表单传递：----------------------page1.htm-----------------
PHP:--------------------------------------------------------------------------------
<html>
<form name="form1" method="post" action="page2.php" >
<input type="submit" name="Submit" value="提交">
<input type="hidden" name="a" value="hello">
</form>
</html>--------------------------------------------------------------------------------
------------------------page2.php---------------------PHP:--------------------------------------------------------------------------------<?
$a=$_POST["a"]; //$a的值为“hello”
?>--------------------------------------------------------------------------------
二、超链接传递：
-------------------page1.php----------PHP:--------------------------------------------------------------------------------<?
$a="hello";
?>
<a href=page2.php?a=<? echo $a ?>>转到</a>
--------------------------------------------------------------------------------
-------------------page2.php-------------------PHP:--------------------------------------------------------------------------------<?
$a=$_GET["a"]; //$a的值为“hello”
?>--------------------------------------------------------------------------------
三、重定向传递：
1、
-------------------page1.php----------PHP:--------------------------------------------------------------------------------<? 
ob_start();
$a="hello";
header("Location:page2.php?a=".$a);
ob_end_flush();
?>--------------------------------------------------------------------------------
或2、
----------------------------------------PHP:--------------------------------------------------------------------------------<? 
ob_start();
$a="hello";
echo"<script>Location='page2.php?a=".$a."';</script>");
ob_end_flush();
?>--------------------------------------------------------------------------------或3、
----------------------------------------PHP:--------------------------------------------------------------------------------<? 
ob_start();
$a="hello";
echo"<META HTTP-EQUIV='Refresh' CONTENT='0;URL=page2.php?a=".$a."'>";
ob_end_flush();
?>---------------------------------------------------------------------------------------------------page2.php-------------------PHP:--------------------------------------------------------------------------------<?
$a=$_GET["a"]; //$a的值为“hello”
?>--------------------------------------------------------------------------------
四、用COOKIE传递的方法:-------------page1.php-----------------------
<? 
$a="hello";
setcookie("a","$a");
?>-------------page2.php-----------------------
<?
$a=$_COOKIE["a"];
echo $a;
?>五、用SESSION传递的方法:
-------------page1.php-----------------------
<? 
session_start(); 
session_register("a"); 
$a="hello";
?>-------------page2.php-----------------------
<?
$a=$_SESSION["a"];
echo $a;
?>