本文介绍了PHP HTTP引荐来源网址的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我有一个页面，该页面接受来自远程站点的POST.我想检测这些POST来自的域.我意识到它可以被欺骗，但是总比没有好.我尝试访问HTTP_REFERER变量，但它只返回null.
I have a page which accepts POSTs from a remote site. I would like to detect the domain that these POSTs are coming from. I realize that it can be spoofed but it is better than nothing.I have tried accessing the HTTP_REFERER variable but it just returns null.
该页面接受来自PayPal(即时付款通知)和其他付款网关等来源的POST.
The page accepts POSTs from sources like PayPal (instant payment notifications) and other payment gateways.
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推荐答案
您正确拼写了Referer.应该是:
You spelled Referer correctly. It should be:
$_SERVER['HTTP_REFERER']
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