php中$_SERVER['HTTP_HOST']和$_SERVER['SERVER_NAME']的区别，记不住来看看就知道了

本文主要是介绍php中$_SERVER['HTTP_HOST']和$_SERVER['SERVER_NAME']的区别，记不住来看看就知道了，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！

$_SERVER['HTTP_HOST'] = $_SERVER['SERVER_NAME']:$_SERVER['SERVER_PORT']

当URL为：http://www.tomener.com/love.php

$_SERVER['HTTP_HOST']输出是：www.tomener.com
$_SERVER['SERVER_NAME']输出是：www.tomener.com

为什么一样，因为默认端口是:80 ，http_host就把它省略了！实际是：

$_SERVER['HTTP_HOST'] = www.tomener.com:80

而

$_SERVER['SERVER_NAME'] = www.tomener.com

所以，

$_SERVER['HTTP_HOST'] = $_SERVER['SERVER_NAME']:$_SERVER['SERVER_PORT']

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