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HomeBackend DevelopmentPHP Tutorialphp获取当前页面完整URL地址_PHP

使用PHP编写程序的时候,我们常常想要获取当前页面的URL。下面提供一个用于获取当前页面URL的函数以及使用方法:
示例一:

<&#63;php
// 说明:获取完整URL

function 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;
}
&#63;>

定义该函数之后就可以直接调用了:

<&#63;php
 echo curPageURL();
&#63;>

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:http://www.ludou.org/hello.html?u=123,只想获取http://www.ludou.org/hello.html,你可以将以上函数按示例二修改。

示例二:

<&#63;php
// 说明:获取无参数URL

function curPageURL() 
{
  $pageURL = 'http';

  if ($_SERVER["HTTPS"] == "on") 
  {
    $pageURL .= "s";
  }
  $pageURL .= "://";

  $this_page = $_SERVER["REQUEST_URI"];
  
  // 只取 &#63; 前面的内容
  if (strpos($this_page, "&#63;") !== false)
  {
    $this_pages = explode("&#63;", $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;
}
&#63;>

当然也可以采用 $_SERVER['PHP_SELF'] (该变量不返回URL中的参数),

示例三:

<&#63;php
// 说明:获取无参数URL

function 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;
}
&#63;>

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:

<&#63;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'] .'&#63;'. $_SERVER['argv'][0];
    }
    else
    {
      $uri = $_SERVER['PHP_SELF'] .'&#63;'. $_SERVER['QUERY_STRING'];
    }
  }
  return $uri;
}
&#63;>

再为大家分享两种解决方法:

第一种方法:

<&#63;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' &#63; 'https://' : 'http://';
  $php_self = $_SERVER['PHP_SELF'] &#63; $_SERVER['PHP_SELF'] : $_SERVER['SCRIPT_NAME'];
  $path_info = isset($_SERVER['PATH_INFO']) &#63; $_SERVER['PATH_INFO'] : '';
  $relate_url = isset($_SERVER['REQUEST_URI']) &#63; $_SERVER['REQUEST_URI'] : $php_self.(isset($_SERVER['QUERY_STRING']) &#63; '&#63;'.$_SERVER['QUERY_STRING'] : $path_info);
  return $sys_protocal.(isset($_SERVER['HTTP_HOST']) &#63; $_SERVER['HTTP_HOST'] : '').$relate_url;
}
 
echo get_url();
&#63;>

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&#63;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url
echo 'http://'.$_SERVER['HTTP_HOST'].$_SERVER['REQUEST_URI'];
echo 'http://'.$_SERVER['HTTP_HOST'].$_SERVER['PHP_SELF'].'&#63;'.$_SERVER['QUERY_STRING'];
#http://localhost/blog/testurl.php&#63;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&#63;id=5

//只取路径
$url='http://'.$_SERVER['SERVER_NAME'].$_SERVER["REQUEST_URI"]; 
echo dirname($url);
#http://localhost/blog

希望本文所述对大家学习php程序设计有所帮助。

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