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从a.php向b.php传递参数的控制有关问题

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Release： 2016-06-13 10:47:59
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从a.php向b.php传递参数的控制问题~
a.php里面有一个form表单，表单指向action="b.php"，然后是通过post提交的。b.php里是接收这些表单里的数据（只有两个数据，都是字符串类型），然后向数据库里执行INSERT操作，然后通过header("Location:a.php")返回a.php页面。
问题就是：
我如何确保b.php只能通过a.php的表单提交来访问，而禁止其它一切访问方式？
比如检测表单的变量是否存在？

------解决方案--------------------
判断 $_SERVER['HTTP_REFERER'] 即可

Related labels：
location php quot referer server
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