PHP gets the full URL address of the current page, PHP gets the current url_php tutorial

PHP Gets the current page full URL address, PHP gets the current URL

When using PHP to write programs, we often want to get the URL of the current page. Here is a function to get the URL of the current page and how to use it:
Example one:

<?php//Description: Get the full urlfunction Curpageurl () {  $pageURL = ' http ';  if ($_server["HTTPS"] = = "on")   {    $pageURL. = "S";  }  $pageURL. = "://";  if ($_server["Server_port"]! = "+")   {    $pageURL. = $_server["SERVER_NAME"]. ":" . $_server["Server_port"]. $_server["Request_uri"];  }   else   {    $pageURL. = $_server["SERVER_NAME"]. $_server["Request_uri"];  }  return $pageURL;}? >

Once you have defined the function, you can call it directly:

<?php echo Curpageurl ();? >

The above function can get the full URL of the current page, which is what you see in the browser's address bar. However, sometimes we do not want the parameters in the URL (? , such as: http://www.ludou.org/hello.html?u=123, just want to get http://www.ludou.org/hello.html, you can modify the above function as example two.

Example two:

<?php//Description: Get no parameter urlfunction Curpageurl () {  $pageURL = ' http ';  if ($_server["HTTPS"] = = "on")   {    $pageURL. = "S";  }  $pageURL. = "://";  $this _page = $_server["Request_uri"];    Take only? The preceding content  if (Strpos ($this _page, "?")!== false)  {    $this _pages = Explode ("?", $this _page);    $this _page = reset ($this _pages);  }  if ($_server["Server_port"]! = "+")   {    $pageURL. = $_server["SERVER_NAME"]. ":" . $_server["Server_port"]. $this _page;  }   else   {    $pageURL. = $_server["SERVER_NAME"]. $this _page;  }  return $pageURL;}? >

Of course you can also use $_server[' php_self ', which does not return parameters in the URL.

Example three:

<?php//Description: Get no parameter urlfunction Curpageurl () {  $pageURL = ' http ';  if ($_server["HTTPS"] = = "on")   {    $pageURL. = "S";  }  $pageURL. = "://";  if ($_server["Server_port"]! = "a")   {    $pageURL. = $_server["SERVER_NAME"]. ":". $_server["Server_port"]. $_server[' php_self ');  }   else   {    $pageURL. = $_server["SERVER_NAME"]. $_server[' php_self '];  }  return $pageURL;}? >

In addition, $_server[' Request_uri ' and $_server[' Request_url '] are slightly different:
$_server["Request_uri"] returns the full path, including the parameter (/directory/file.ext?query=string)
$_server[' Request_url ' only returns the file path, excluding parameters, (/directory/file.ext), and $_server[' php_self '), except on some servers $_ server[' Request_url '] not available!

Note: URLs using rewrite rules, $_server[' php_self ' and $_server[' Request_url ' may not return what you want

Finally, to remind you that $_server["Request_uri" is only supported by Apache and want to get $_server[' Request_uri ') values, you can use the following scenarios:

<?php//Description: Gets the universal solution for _server[' Request_uri '] value 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;}? >

And then we'll share two solutions:

The first method:

<?php/** * Get the current page full URL address */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 ();? >

The second method:

• JavaScript implementation

Top.location.href  The address of the top-level window this.location.href the address of the current window

• PHP implementation
  

#测试网址:   http://localhost/blog/testurl.php?id=5//get the domain name or host address echo $_server[' http_host '].
"; #localhost//Get web address echo $_server[' php_self ']. "
"; #/blog/testurl.php//get URL parameters echo $_server["Query_string"]. "
"; #id =5//Get the user agent echo $_server[' Http_referer '].
"; Get the full 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//contains the port number of the complete Urlecho ' http://'. $_server[' Server_ NAME ']. ': '. $_server["Server_port"].$_server["Request_uri"]; #http://localhost:80/blog/testurl.php?id=5//only take path $url= '/http '. $_server[' server_name '].$_server["Request_uri"] ; echo dirname ($url); #http://localhost/blog

I hope this article will help you learn PHP programming.

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