Php url parse

<?php
$url = 'http://username:password@hostname:9090/path?arg=value#anchor';

var_dump(parse_url($url));
var_dump(parse_url($url, PHP_URL_SCHEME));
var_dump(parse_url($url, PHP_URL_USER));
var_dump(parse_url($url, PHP_URL_PASS));
var_dump(parse_url($url, PHP_URL_HOST));
var_dump(parse_url($url, PHP_URL_PORT));
var_dump(parse_url($url, PHP_URL_PATH));
var_dump(parse_url($url, PHP_URL_QUERY));
var_dump(parse_url($url, PHP_URL_FRAGMENT));

Source: php.net

Part of url php

    //https://www.google.com/search?key=1234
	$url = $_SERVER['REQUEST_URI']; 
    $url_components = parse_url($url); 
    parse_str($url_components['query'], $params); 
    $key = $params['key']; 

// key=1234

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