// 获取url参数值

function is_set_param($param){

$current_url = $_SERVER["QUERY_STRING"];

$arr = explode('&',$current_url);

$value = '';

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

$left_c = explode('=',$v);

if ($left_c[0] == $param) {

$value = $left_c[1];

break;

}

}

return $value;

}