header 跳转时报错误。Header may not contain more than a single header, new line detected

我在用php的header做跳转时，报错误。

Header may not contain more than a single header, new line detected

先贴一下代码：

class advertJumpUrl
{
/**
* 广告唯一的key
* @return array
*/
private static function aGetKey()
{
$sKey = Ko_Tool_Input::VClean("r","k",Ko_Tool_Input::T_STR);
$sKey = \apps\brand\cpm\MFacade_LogApi::sDecrypt($sKey);
$aPara = explode('_', $sKey);
return $aPara;
}

/**
* 广告跳转的url
* @return url
*/
private static function sGetUrl()
{
$sUrl = Ko_Tool_Input::VClean("r","t",Ko_Tool_Input::T_STR);
return \apps\brand\cpm\MFacade_LogApi::sDecrypt($sUrl);
}

/**
* 程序执行
*/
public static function vRun()
{
$aPara = self::aGetKey();
$sUrl = self::sGetUrl();
//        $sUrl = rawurldecode($sUrl);
if($aPara && $sUrl) {
// 记录点击事件
\apps\brand\cpm\MFacade_LogApi::vClick($aPara[1], $aPara[0]);
header('HTTP/1.1 301 Moved Permanently');
header('location:'.$sUrl);
exit;
}
header('HTTP/1.1 301 Moved Permanently');
header('location:/');
exit;
}
}
advertJumpUrl::vRun();

在网上搜索一下，是因为URL编码有问题。我尝试用urlencode 然后再urldecode。发现不行。

有人建议用rawurlencode。我试了试，成功了。

urlencode 和rawurlencode 的区别：

urlencode 将空格则编码为加号（+）
rawurlencode 将空格则编码为加号（%20）

参考文档：
https://stackoverflow.com/questions/16320403/getting-warning-header-may-not-contain-more-than-a-single-header-new-line-dete http://www.jb51.net/article/24123.htm