php URL各部分获取方法(全局变量)

$url = "http://www.electrictoolbox.com/php-extract-domain-from-full-url/";
$parts = parse_url($url);

输出: Array ( [scheme] => http [host] => www.electrictoolbox.com [path] => /php-extract-domain-from-full-url/ )

示例2：

$url = 'http://username:password@hostname/path?arg=value#anchor';
print_r(parse_url($url));
echo parse_url($url, PHP_URL_PATH);
?>

输出: Array ( [scheme] => http [host] => hostname [user] => username [pass] => password [path] => /path [query] => arg=value [fragment] => anchor )

很容易便分解出一个URL的各个部，取指定的部分出来也很容易： echo parse_url($url, PHP_URL_PATH); 在第二个参数中，设定如下的参数: PHP_URL_SCHEME, PHP_URL_HOST, PHP_URL_PORT, PHP_URL_USER, PHP_URL_PASS, PHP_URL_PATH, PHP_URL_QUERY or PHP_URL_FRAGMENT。