3v4l.org

run code in 300+ PHP versions simultaneously
<?php $_GET = [ 'a' => 1, 'b' => 2, 'c' => 3, ]; $_SERVER = [ 'HTTP_HOST' => 'http://www.example.com', 'SCRIPT_NAME' => '/test.php', ]; function c_url($key) { unset($_GET[$key]); $queryString = http_build_query($_GET); return $_SERVER['HTTP_HOST'].$_SERVER['SCRIPT_NAME'].'?'.$queryString; } echo c_url('b') . '&b=5';
based on bo1Jb
Output for 7.2.0 - 7.2.33, 7.3.0 - 7.3.23, 7.4.0 - 7.4.12, 8.0.0
http://www.example.com/test.php?a=1&c=3&b=5