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: The 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 parses a URL and returns an associative array that 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. 

Example 1: Below examples uses parse_url() and parse_str() function to get the parameters from URL string.

<?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'];

?>

Hi Tonny

Example 2: Below example uses parse_url() and parse_str() function to get the parameters from URL string.

<?php

// Initialize URL to the variable
$url = 'https://www.geeksforgeeks.org/register/';
    
// 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'];

?>

Hi Amit your emailID is [email protected]

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.