示例一:
<?php// 说明:获取完整URLfunction curPageURL() {$pageURL = 'http';if ($_SERVER["HTTPS"] == "on") {$pageURL .= "s";}$pageURL .= "://";if ($_SERVER["SERVER_PORT"] != "80") {$pageURL .= $_SERVER["SERVER_NAME"] . ":" . $_SERVER["SERVER_PORT"] . $_SERVER["REQUEST_URI"];} else {$pageURL .= $_SERVER["SERVER_NAME"] . $_SERVER["REQUEST_URI"];}return $pageURL;}?>
定义该函数之后就可以直接调用了:
<?phpecho curPageURL();?>
上面的函数可以获取当前页面完整的URL,即你在浏览器地址栏看到的内容。但是,有时候我们不想要URL中的参数( ? 号后面的内容),如:/hello.html?u=123,只想获取/hello.html,你可以将以上函数按示例二修改。
示例二:
<?php// 说明:获取无参数URLfunction curPageURL() {$pageURL = 'http';if ($_SERVER["HTTPS"] == "on") {$pageURL .= "s";}$pageURL .= "://";$this_page = $_SERVER["REQUEST_URI"];// 只取 ? 前面的内容if (strpos($this_page, "?") !== false){$this_pages = explode("?", $this_page);$this_page = reset($this_pages);}if ($_SERVER["SERVER_PORT"] != "80") {$pageURL .= $_SERVER["SERVER_NAME"] . ":" . $_SERVER["SERVER_PORT"] . $this_page;} else {$pageURL .= $_SERVER["SERVER_NAME"] . $this_page;}return $pageURL;}?>
当然也可以采用 $_SERVER['PHP_SELF'] (该变量不返回URL中的参数)
示例三:
<?php// 说明:获取无参数URLfunction curPageURL() {$pageURL = 'http';if ($_SERVER["HTTPS"] == "on") {$pageURL .= "s";}$pageURL .= "://";if ($_SERVER["SERVER_PORT"] != "80") {$pageURL .= $_SERVER["SERVER_NAME"].":" . $_SERVER["SERVER_PORT"] . $_SERVER['PHP_SELF'];} else {$pageURL .= $_SERVER["SERVER_NAME"] . $_SERVER['PHP_SELF'];}return $pageURL;}?>
另外,$_SERVER['REQUEST_URI'] 和 $_SERVER['REQUEST_URL'] 是有稍微区别的:
$_SERVER["REQUEST_URI"]返回完整的路径,包含参数 ( /directory/file.ext?query=string )
$_SERVER['REQUEST_URL']只返回文件路径,不包括参数,( /directory/file.ext ),和 $_SERVER['PHP_SELF'] 差不多,只不过在有些服务器上$_SERVER['REQUEST_URL']不可用!
注意:URL使用rewrite规则的时候,$_SERVER['PHP_SELF'] 和 $_SERVER["REQUEST_URL"] 可能不会返回你想要的东西
最后提醒一点,$_SERVER["REQUEST_URI"] 只有 apache 才支持,想要获取$_SERVER['REQUEST_URI'] 值,可以使用以下方案:
<?php// 说明:获取 _SERVER['REQUEST_URI'] 值的通用解决方案function request_uri(){if (isset($_SERVER['REQUEST_URI'])){$uri = $_SERVER['REQUEST_URI']; }else{if (isset($_SERVER['argv'])){$uri = $_SERVER['PHP_SELF'] .'?'. $_SERVER['argv'][0];}else{$uri = $_SERVER['PHP_SELF'] .'?'. $_SERVER['QUERY_STRING'];}}return $uri;}?>
再为大家分享两种解决方法:
第一种方法:
<?php/*** 获取当前页面完整URL地址*/function get_url() {$sys_protocal = isset($_SERVER['SERVER_PORT']) && $_SERVER['SERVER_PORT'] == '443' ? 'https://' : 'http://';$php_self = $_SERVER['PHP_SELF'] ? $_SERVER['PHP_SELF'] : $_SERVER['SCRIPT_NAME'];$path_info = isset($_SERVER['PATH_INFO']) ? $_SERVER['PATH_INFO'] : '';$relate_url = isset($_SERVER['REQUEST_URI']) ? $_SERVER['REQUEST_URI'] : $php_self.(isset($_SERVER['QUERY_STRING']) ? '?'.$_SERVER['QUERY_STRING'] : $path_info);return $sys_protocal.(isset($_SERVER['HTTP_HOST']) ? $_SERVER['HTTP_HOST'] : '').$relate_url;}echo get_url();?>
第二种方法:
javascript实现
top.location.href 顶级窗口的地址this.location.href 当前窗口的地址
PHP实现
#测试网址: http://localhost/blog/testurl.php?id=5//获取域名或主机地址 echo $_SERVER['HTTP_HOST']."<br>"; #localhost//获取网页地址 echo $_SERVER['PHP_SELF']."<br>"; #/blog/testurl.php//获取网址参数 echo $_SERVER["QUERY_STRING"]."<br>"; #id=5//获取用户代理 echo $_SERVER['HTTP_REFERER']."<br>"; //获取完整的urlecho 'http://'.$_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urlecho '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