php http_build_query() 构建查询参数的小例子

/**
* http_build_query() 构建查询参数
* edit: bbs.it-home.org
*/
$vars = array('page' => 4, 'search' => 'this & that');
$qs = http_build_query($vars);
$url = 'http://bbs.it-home.org/search.php?' . $qs;
$page = file_get_contents($url);
?>