修改一段代码,该怎么处理

修改一段代码
下面这段代码怎么改成http://localhost/GetAllPic.php?url=xxx
url=后面的网址就是要提交的网址不用点提交按钮
麻烦知道的大哥直接给代码，谢了
require_once 'DownImage.class.php';
?>

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------解决方案--------------------

function modify_build_url($params = array(), $url = NULL) {

		//my_debug(current_url());

		if (! $url) {

			$url = $_SERVER ['REQUEST_URI'];

		}

		$parts = parse_url ( $url );

		if (! is_array ( $parts )) {

			$parts = array ();

		}

		if (! array_key_exists ( 'host', $parts )) {

			$parts ['host'] = $_SERVER ['HTTP_HOST'];

		}

		

		$gets = array ();

		if (array_key_exists ( 'query', $parts )) {

			$query = $parts ['query'];

			parse_str ( $query, $gets );

		}

		if (! is_array ( $params )) {

			$params = array ();

		}

		if (! is_array ( $gets )) {

			$gets = array ();

		}

		foreach ( $params as $k => $v ) {

			$gets [$k] = $v;

		}

		$path = null;

		if (array_key_exists ( 'path', $parts )) {

			$path = $parts ['path'];

		}

		if (! $path) {

			$path = "/";

		}

		$ret = sprintf ( "http://%s%s?%s", $parts ['host'], $path, http_build_query ( $gets ) );

		return $ret;

	}