$currentUrl = 'http://example.com/page?id=1'; JURI::getInstance()->setVar('id', 2); $newUrl = JURI::getInstance()->toString(); echo $newUrl; // Output: http://example.com/page?id=2
$currentUrl = 'http://example.com/search?q=red+shoes&category=footwear'; JURI::getInstance()->setVar('q', 'black+boots'); $newUrl = JURI::getInstance()->setVar('category', 'boots')->toString(); echo $newUrl; // Output: http://example.com/search?q=black+boots&category=bootsThis code takes the current URL (`$currentUrl`) and uses `setVar()` to change the value of the `q` query parameter to "black+boots" and the value of the `category` query parameter to "boots". The new URL is then returned as a string and printed to the screen. Based on the use of the `JURI` class, it can be determined that this function is part of the Joomla PHP library.