php的3个消息弹窗 小应用

/*1.弹出消息*/
function aler($msg)
{
   echo "<script language=javascript>";
   echo "alert(\"$msg\");";
   echo "</script>";
}

/*2.弹出消息后，返回之前页面或跳转到指定网页*/
function msge($msg,$goto='')
{
   echo "<script language=javascript>";
   echo "alert(\"$msg\");";
   if(!empty($goto))
       echo "location=\"$goto\";";
   else
       echo "history.go(-1);";
   echo "</script>";
}

/*3.延迟指定秒数后跳转到指定网页*/
function goto($tim,$goto)
{
   echo "<meta http-equiv=\"Refresh\" content=".$tim.";URL=".$goto.">";
}


/************************
//应用示例
aler("感谢浏览!");
msge("抱歉，需要重来!");
msge("欢迎访问!","http://yun.widuu.com");
goto(5,"http://yun.widuu.com");
************************/