PHP function for obtaining the URL in the address bar

When getting a url address in php, I will use the super global variable $ _ SERVER, which includes various parameters, such as HTTP_HOST, PHP_SELF, and QUERY_STRING.

Introduction to several functions used by PHP to obtain URLs

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<? Php // Obtain the domain name or host address Echo $ _ SERVER ['HTTP _ host']. "<br> "; // Obtain the webpage address Echo $ _ SERVER ['php _ SELF ']. "<br> "; // Obtain URL parameters Echo $ _ SERVER ["QUERY_STRING"]. "<br> "; // Detailed address of the source webpage Echo $ _ SERVER ['HTTP _ referer']. "<br> "; ?>

Combine the above functions to obtain the complete URL address.

The Code is as follows:

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<? Php // Description: Obtain the complete 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; } ?>

After defining this function, you can directly call it:

The Code is as follows:	Copy code
<? Php Echo curPageURL (); ?>