How to get parameters from a URL string in PHP?

The parameters from a URL string can be retrieved in PHP using parse_url() and parse_str() functions.

Note: Page URL and the parameters are separated by the ? character.

parse_url() Function: The parse_url() function is used to return the components of a URL by parsing it. It parse an URL and return an associative array which contains its various components.

Syntax:

parse_url( $url, $component = -1 )

parse_str() Function: The parse_str() function is used to parse a query string into variables. The string passed to this function for parsing is in the format of a query string passed via a URL.

Syntax:

parse_str( $string, $array )

Approach: Parse the URL string using parse_url() function which will return an associative array that contains its (passed URL) various components. The query of the array returned by parse_url() function which contains a query string of URL.

Below examples uses parse_url() and parse_str() function to get the parameters from URL string. 

Example 1:

PHP

<?php

// Initialize URL to the variable
$url = 'https://www.geeksforgeeks.org?name=Tonny';

// Use parse_url() function to parse the URL
// and return an associative array which
// contains its various components
$url_components = parse_url($url);

// Use parse_str() function to parse the
// string passed via URL
parse_str($url_components['query'], $params);

// Display result
echo ' Hi '.$params['name'];

?>

Output:

Hi Tonny

Example 2:

PHP

<?php

// Initialize URL to the variable
$url = 'https://www.geeksforgeeks.org/register?name=Amit&email=amit1998@gmail.com';

// Use parse_url() function to parse the URL
// and return an associative array which
// contains its various components
$url_components = parse_url($url);

// Use parse_str() function to parse the
// string passed via URL
parse_str($url_components['query'], $params);

// Display result
echo ' Hi '.$params['name'].' your emailID is '.$params['email'];

?>

Output:

Hi Amit your emailID is amit1998@gmail.com

PHP is a server-side scripting language designed specifically for web development. You can learn PHP from the ground up by following this PHP Tutorial and PHP Examples.