Bercakap secara ringkas tentang laluan URL dalam Thinkphp

__ROOT__：/other/thinkphp/mydemo
__SELF__：/other/thinkphp/mydemo/Form/index.php
__ACTION__： /other/thinkphp/mydemo/Form/index.php/Index/index
__URL__： /other/thinkphp/mydemo/Form/index.php/Index
__APP__： /other/thinkphp/mydemo/Form/index.php
__PUBLIC__：/other/thinkphp/mydemo/Public
../public(不区分大小写)：/other /thinkphp/mydemo/Form/Tpl/default/Public
APP_PUBLIC_URL：/other/thinkphp/mydemo/Form/Tpl/default/Public
WEB_PUBLIC_URL：/other/thinkphp/mydemo/Public

//项目公共目录
$tmplContent = str_ireplace('../public',APP_PUBLIC_URL,$tmplContent);
//网站公共目录
$tmplContent = str_replace('__PUBLIC__',WEB_PUBLIC_URL,$tmplContent);
//网站根目录
$tmplContent = str_replace('__ROOT__',__ROOT__,$tmplContent);
//当前项目地址
$tmplContent = str_replace('__APP__',__APP__,$tmplContent);
//当前模块地址
$tmplContent = str_replace('__URL__',__URL__,$tmplContent);
//当前项目操作地址
$tmplContent = str_replace('__ACTION__',__ACTION__,$tmplContent);
//当前页面操作地址
$tmplContent = str_replace('__SELF__',__SELF__,$tmplContent);

//获取域名或主机地址
echo $_SERVER['HTTP_HOST']."
"; #localhost
//获取网页地址
echo $_SERVER['PHP_SELF']."
"; #/blog/testurl.php
//获取网址参数
echo $_SERVER["QUERY_STRING"]."
"; #id=5
//获取用户代理
echo $_SERVER['HTTP_REFERER']."
";
//获取完整的url
echo 'http://'.$_SERVER['HTTP_HOST'].$_SERVER['REQUEST_URI'];
echo 'http://'.$_SERVER['HTTP_HOST'].$_SERVER['PHP_SELF'].'?'.$_SERVER['QUERY_STRING'];
#http://localhost/blog/testurl.php?id=5
//包含端口号的完整url
echo 'http://'.$_SERVER['SERVER_NAME'].':'.$_SERVER["SERVER_PORT"].$_SERVER["REQUEST_URI"];
#http://localhost:80/blog/testurl.php?id=5
//只取路径
$url='http://'.$_SERVER['SERVER_NAME'].$_SERVER["REQUEST_URI"];
echo dirname($url);
#http://localhost/blog