Php what is current url

How to Retrieve the Current URL Using PHP: A Comprehensive Guide

Learn how to retrieve the current URL using PHP with this comprehensive guide. Improve the security and performance of your web applications with these helpful tips.

• Retrieving the current page URL using $_SERVER
• Retrieving the actual file name in PHP
• Get Current Page URL in PHP
• Retrieving the current URL in WordPress
• Other techniques for retrieving the current URL
• Important points to consider
• Helpful points to consider
• Other helpful code samples for retrieving the current URL with PHP
• Conclusion
• How to get current URL using PHP?
• How do I get the current URL?
• How to get URL without query string in PHP?
• How to include a URL in PHP?

As the internet has evolved, web development has become more complex. Websites now have to be optimized for speed, security, and SEO. One crucial aspect of web development is retrieving the current URL of a web page. This information is essential for various purposes, including tracking user behavior, creating dynamic links, and debugging. In this article, we will explore the various techniques and variables available in PHP to retrieve the current URL of a web page.

Retrieving the current page URL using $_SERVER

The $_SERVER superglobal variable is an array that contains server and execution environment information. It includes information such as the IP address of the server, the client’s IP address, the page’s name, and the URL of the page. To retrieve the current page URL, we can use the $_SERVER[’HTTPS’], $_SERVER[’REQUEST_URI’], and $_SERVER[’SERVER_PORT’] variables.

$protocol = isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] === 'on' ? "https" : "http"; $url = "$protocol://" . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI']; 

The above code will retrieve the full URL of the current page. The $protocol variable will retrieve the protocol of the URL, and the $_SERVER[’HTTP_HOST’] variable will retrieve the domain name of the server. The $_SERVER[’REQUEST_URI’] variable will retrieve the URL path of the current page. The code will work with both HTTP and HTTPS protocols.

Retrieving the actual file name in PHP

In some cases, we may want to retrieve the actual file name of the current page. There are three ways to do this using PHP: $_SERVER[’PHP_SELF’], __FILE__, and $_SERVER[’SCRIPT_FILENAME’].

$file_name = basename($_SERVER['PHP_SELF']); 

The above code will retrieve the file name of the current page using the PHP_SELF variable. We can also retrieve the full path and filename using the __FILE__ variable.

$file_name = basename(__FILE__); 

The above code will retrieve the file name of the current script using the __FILE__ magic constant. We can also retrieve the full path and filename using the $_SERVER[’SCRIPT_FILENAME’] variable.

$file_name = basename($_SERVER['SCRIPT_FILENAME']); 

The above code will retrieve the file name of the current script using the SCRIPT_FILENAME variable.

Get Current Page URL in PHP

Retrieving the current URL in WordPress

Retrieving the current URL in WordPress is similar to retrieving it in PHP. We can use the $_SERVER superglobal variable or specific WordPress functions to retrieve the current page URL.

$url = home_url( $_SERVER['REQUEST_URI'] ); 

The above code will retrieve the home URL for the current site using the home_url() function. We can also use the wp_get_current_url() function to retrieve the current page URL.

Other techniques for retrieving the current URL

Apart from the methods mentioned above, there are other techniques for retrieving the current URL. One such technique is using the JavaScript window.location.href property.

var url = window.location.href; 

We can also use the PHP function curPageURL() to retrieve the URL without the query string.

function curPageURL()  $pageURL = 'http'; if (isset($_SERVER["HTTPS"]) && $_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; > 

Another technique is using the PHP option allow_url_include to include remote files using a URL.

$contents = file_get_contents('http://example.com/mypage.html'); 

Important points to consider

When retrieving the current URL, there are some important points to consider. One of them is retrieving the host name of the current URL using $_SERVER[’HTTP_HOST’].

We can also retrieve the query string component of the current URL using $_SERVER[’QUERY_STRING’].

$query_string = $_SERVER['QUERY_STRING']; 

We can use the function http_build_query() to build a query string from an array of parameters.

$params = array('name' => 'John', 'age' => '30'); $query_string = http_build_query($params); 

We can use the constant __FILE__ to get the full path and filename of the current file.

We can use the function str_replace() to replace the & symbol with & in a URL.

Helpful points to consider

Apart from the important points to consider, there are some helpful points to consider when retrieving the current URL. One of them is using the .htaccess file to rewrite URLs.

We can also use built-in functions to retrieve the current URL in PHP frameworks such as Laravel and CodeIgniter.

It is important to use the HTTPS protocol for better security of web applications. We should also validate and sanitize URL parameters to prevent security vulnerabilities.

Using an SEO-friendly URL structure can improve search engine rankings. We should also consider the performance implications of using URL parameters in web applications.

We can improve the performance and scalability of web applications using URL rewriting techniques.

Other helpful code samples for retrieving the current URL with PHP

In Php case in point, get url php code example

$url = "http://" . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'];

 $currentUrl = $_SERVER['REQUEST_URI'];

In Php , in particular, get url with php

$actual_link = (isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] === 'on' ? "https" : "http") . "://$_SERVER[HTTP_HOST]$_SERVER[REQUEST_URI]"; 

In Php case in point, php get current page url code sample

In Php , for instance, php current url code sample

function url_origin( $s, $use_forwarded_host = false ) < $ssl = ( ! empty( $s['HTTPS'] ) && $s['HTTPS'] == 'on' ); $sp = strtolower( $s['SERVER_PROTOCOL'] ); $protocol = substr( $sp, 0, strpos( $sp, '/' ) ) . ( ( $ssl ) ? 's' : '' ); $port = $s['SERVER_PORT']; $port = ( ( ! $ssl && $port=='80' ) || ( $ssl && $port=='443' ) ) ? '' : ':'.$port; $host = ( $use_forwarded_host && isset( $s['HTTP_X_FORWARDED_HOST'] ) ) ? $s['HTTP_X_FORWARDED_HOST'] : ( isset( $s['HTTP_HOST'] ) ? $s['HTTP_HOST'] : null ); $host = isset( $host ) ? $host : $s['SERVER_NAME'] . $port; return $protocol . '://' . $host; >function full_url( $s, $use_forwarded_host = false ) < return url_origin( $s, $use_forwarded_host ) . $s['REQUEST_URI']; >$absolute_url = full_url( $_SERVER ); echo $absolute_url;

Conclusion

Retrieving the current URL using PHP is an essential part of web development. In this article, we have explored the various techniques and variables available in PHP to retrieve the current URL of a web page. We have covered retrieving the current page URL using $_SERVER, retrieving the actual file name in PHP, retrieving the current URL in WordPress, other techniques for retrieving the current URL, important points to consider, and helpful points to consider. By following these techniques and best practices, we can ensure that our web applications are optimized for speed, security, and SEO.

Frequently Asked Questions — FAQs

What is the importance of retrieving the current URL using PHP?

Retrieving the current URL in PHP is crucial for improving the security and performance of web applications. It allows developers to validate and sanitize URL parameters, use HTTPS for better security, and optimize URL structure for improved SEO rankings.

How can I retrieve the current page URL using $_SERVER in PHP?

To retrieve the current page URL using $_SERVER in PHP, you can use variables such as $_SERVER[‘HTTPS’], $_SERVER[‘REQUEST_URI’], and $_SERVER[‘SERVER_PORT’]. You can also retrieve the protocol of the URL to get the full path of the current page.

How can I retrieve the current URL in WordPress?

Retrieving the current URL in WordPress is similar to retrieving it in PHP. You can use $_SERVER to retrieve the current page URL, or use functions such as home_url() and wp_get_current_url().

What are some other techniques for retrieving the current URL?

Other techniques for retrieving the current URL include using the JavaScript window.location.href property, the PHP function curPageURL(), and the PHP option allow_url_include to include remote files using a URL.

How can I improve the performance and scalability of my web applications using URL rewriting techniques?

URL rewriting techniques can help improve the performance and scalability of web applications by allowing you to create shorter and more meaningful URLs, reducing the number of HTTP requests, and caching frequently accessed pages.

Why is it important to validate and sanitize URL parameters in PHP?

Validating and sanitizing URL parameters in PHP is important to prevent security vulnerabilities such as SQL injection attacks and cross-site scripting (XSS) attacks. It also helps ensure that the data being passed through the URL is of the correct format and type.

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Как получить текущий URL в PHP?

Сформировать текущий адрес страницы можно с помощью элементов массива $_SERVER. Рассмотрим на примере URL:

Полный URL

$url = ((!empty($_SERVER['HTTPS'])) ? 'https' : 'http') . '://' . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI']; echo $url;

Результат:

https://example.com/category/page?sort=asc

URL без GET-параметров

$url = ((!empty($_SERVER['HTTPS'])) ? 'https' : 'http') . '://' . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI']; $url = explode('?', $url); $url = $url[0]; echo $url;

Результат:

https://example.com/category/page

Основной путь и GET-параметры

$url = $_SERVER['REQUEST_URI']; echo $url;

Результат:

Только основной путь

$url = $_SERVER['REQUEST_URI']; $url = explode('?', $url); $url = $url[0]; echo $url;

Результат:

Только GET-параметры

Результат:

Для преобразования строки с GET-параметрами в ассоциативный массив можно применить функцию parse_str() .

parse_str('sort=asc&page=2&brand=rich', $get); print_r($get);

Результат:

Array ( [sort] => asc [page] => 2 [brand] => rich )

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Get the Current URL of Webpage in PHP

If you are browsing a webpage or a web application, PHP will store a lot of useful information in the background. This information gets stored in PHP’s super-global variables. These are pre-defined variables that are available in all types of scope. You can use these variables to obtain the current URL of the web page.

How to get the current full URL?

The super-global variable called $_SERVER can fetch you the current URL of a website. Some of the properties of the variable that you can access include HTTP_USER_AGENT , HTTP_HOST and HTTP_ACCEPT . For the URL, we will access the HTTP_HOST and REQUEST_URl property.

But you need to check the protocol of the website, if it is HTTP or HTTPS .

Example Code

Output

https://www.stechies.com/current-url.php?v=1

Explanation

In the code above, the super-global variable $_SERVER is used to access the property ‘HTTPS’ to check and fetch the protocol used for the site. The value is assigned to a variable called $protocol.

Then, the $_SERVER variable is used again to access the ‘HTTP_HOST’ property to obtain the host name. The property REQUEST_URl is used to fetch URL of the current webpage. Both the information is appended using the concatenation operator (.) and stored in the variable $finalurl . This value is printed out using the echo statement.

Function to display full URL

Output

https://www.stechies.com/current-url.php?o=p

Explanation

This code checks whether the current site runs on HTTP or HTTPS , using the $_SERVER . Then, with that value (which can be HTTPS or HTTP), the current hostname and URL of the site is appended. The combined value of all that information gives us the full URL of the website.

Output

https://www.stechies.com/current-url.php?o=p

You can use this code to get the current URL of the webpage when you know that your site is running on HTTP or HTTPS .

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