Php obtains the complete URL of the current page

This article mainly introduces the function of php to obtain the complete URL address of the current page. if you are interested, you can refer to the function that we often want to obtain the URL of the current page when compiling a program using PHP. The following provides a function for obtaining the URL of the current page and its usage:
Example 1:

<? Php // description: obtain the complete 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;}?>

After defining this function, you can directly call it:

<?php echo curPageURL();?>

The above function can get the complete URL of the current page, that is, the content you see in the browser address bar. However, sometimes we do not want parameters in the URL (? Number), such as: http://www.ludou.org/hello.html? U = 123. you only want to get http://www.ludou.org/hello.html. you can modify the above parameters by using the example 2.

Example 2:

<? Php // description: obtain URLfunction curPageURL () {$ pageURL = 'http'; if ($ _ SERVER ["HTTPS"] = "on") {$ pageURL. = "s" ;}$ pageURL. = ": //"; $ this_page = $ _ SERVER ["REQUEST_URI"]; // get only? The preceding content, 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;}?>

Of course, you can also use $ _ SERVER ['php _ SELF '] (this variable does not return parameters in the URL ),

Example 3:

<? Php // description: obtain 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;}?>

In addition, $ _ SERVER ['request _ url'] and $ _ SERVER ['request _ url'] are slightly different:
$ _ SERVER ["REQUEST_URI"]Return the complete path, including the parameter (/directory/file. ext? Query = string)
$ _ SERVER ['request _ url']Only the file path is returned, excluding parameters (/directory/file. ext), similar to $ _ SERVER ['php _ SELF '], except that $ _ SERVER ['request _ url'] is unavailable on some servers!

Note: when a URL uses a rewrite rule, $ _ SERVER ['php _ SELF '] and $ _ SERVER ["REQUEST_URL"] may not return what you want.

Note that $ _ SERVER ["REQUEST_URI"] is only supported by apache. to obtain the value of $ _ SERVER ['request _ URI '], you can use the following solution:

<? Php // description: obtain the value of _ SERVER ['request _ url']. 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 ;}?>

We will share with you two solutions:

Method 1:

<? Php/*** get the complete URL of the current page */function get_url () {$ sys_protocal = isset ($ _ SERVER ['server _ port']) & $ _ SERVER ['server _ port'] = '000000 '? '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 ();?>

Method 2:

• Javascript implementation

Top. location. href top-level window address this. location. href current window address

• PHP implementation
  

# Test URL: http: // localhost/blog/testurl. php? Id = 5 // Obtain the domain name or HOST address echo $ _ SERVER ['http _ host']."
"; # Localhost // Obtain the webpage address echo $ _ SERVER ['php _ SELF ']."
"; #/Blog/testurl. php // Obtain the url parameter echo $ _ SERVER [" QUERY_STRING "]."
"; # Id = 5 // obtain the user proxy echo $ _ SERVER ['http _ referer']."
"; // Obtain the complete 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 // Complete urlecho 'http: // 'containing the port number ://'. $ _ SERVER ['server _ name']. ':'. $ _ SERVER ["SERVER_PORT"]. $ _ SERVER ["REQUEST_URI"]; # http: // localhost: 80/blog/testurl. php? Id = 5 // only the 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.