利用PHP实现与ASP Banner组件相似的类

<?php

/*******************************************************

 作者: 吴振亨 (Biz)--phpscript

 E-mail:wuzhenheng@china.com

 web: http://phpscript.osh.com.cn

 文件名：AdRotator.class.php3                 

 版权声明:                      



 如果您使用了本文件，请给作者写一封E-mail   

 如有问题欢迎与作者联系

 谢谢您的关注!                     

********************************************************/



/*

广告条管理程序

public method

    GetAdvertisement($adfile)

     

parameters

    Target=

    Width=

    Height=

    Border=

    Redirect=

     

*/

class AdRotator {

    var $Target="_blank";

    var $Width="460";

    var $Height="60";

    var $Border=0;

    var $Redirect="";

    var $BannerData=array ();

    var $RandTemp=1;

     

function AdRotator()

    {

    }

/*

public  

返回广告的链接字串

*/

function GetAdvertisement($adfile)

    {

    if(count($this->BannerData)==0)

        {

        $this->BannerData=$this->ReadAdFile($adfile);

        }

    $AdData=$this->BannerData;

     

    $uplimited=count($AdData);

     

    //随机产生一个ID

    srand((double)microtime()*1000000000000000000);

    $id=@rand(1,$uplimited);

                

        while($this->RandTemp==$id)

               {

            srand((double)microtime()*1000000000000000000);

               //$id=@rand(1,count($AdData));

               $id=@rand(1,$uplimited);

               }

           $this->RandTemp=$id;

         

       //echo $id;

       //echo count($AdData);

       //echo $AdData[5]["image"];

         

         

        $LinkString=" Redirect;

        $LinkString.="?url=".$AdData[$id]["url"];

        $LinkString.="" Target="".$this->Target;

        $LinkString.="" Title="".$AdData[$id]["title"];

        $LinkString.="" >";

        $LinkString.=" Border;

        $LinkString.="" src="".$AdData[$id]["image"];

        $LinkString.="" width="".$this->Width;

        $LinkString.="" height="".$this->Height;

        $LinkString.="" >";

        $LinkString.="";

         

        //echo $LinkString;

        return $LinkString;

    }

/*

private

读入文件的基本设置

*/

function ReadAdFile($adfile)

    {

    $FP=fopen($adfile,"r");

    while($buffer=@fgets($FP,1024))

        {

        if(!eregi("#",$buffer))

            {

            if(eregi("^*",$buffer))

                {

                $switchto="off";

                }



            $SetTemp=split("=",$buffer);



            if($switchto=="")

                {

                switch     ($SetTemp[0])

                    {

                    case "REDIRECT":

                    $this->Redirect=$SetTemp[1];

                    break;

                     

                    case "WIDTH":

                    $this->WIDTH=$SetTemp[1];

                    break;

                     

                    case "HEIGHT":

                    $this->HEIGHT=$SetTemp[1];

                    break;

                     

                    case "BORDER":

                    $this->BORDER=$SetTemp[1];

                    break;

                    case "TARGET":

                    $this->Target=$SetTemp[1];

                    break;

                    }

                }

            else

                {

                switch     ($SetTemp[0])

                    {

                    case "image":

                    $i++;

                    $BannerData[$i]["image"]=$SetTemp[1];

                    //echo "
";echo $buffer;echo $SetTemp[1];

                    //echo $BannerData[$i]["image"];

                    break;

                     

                    case "url":

                    $BannerData[$i]["url"]=$SetTemp[1];

                    break;

                     

                    case "title":

                    $BannerData[$i]["title"]=$SetTemp[1];

                    break;

                     

                    case "rate":

                    $BannerData[$i]["rate"]=$SetTemp[1];

                    break;

                    }//end of switch

                }//end of if($switch)

            }//end of if(#)

         

        }//end of while



    return $BannerData;

     

    }//end of function



}//end of class



/*

使用方法

广告设置文件书写格式banner.txt

------开始---

REDIRECT=./adredir.asp

WIDTH=468

HEIGHT=60

BORDER=0

*



#注释



#某某公司广告1

image=../banner/1.gif

url=http://www.asps0ite.com1

title=One

rate=30

----结束-----

说明：

与ASP的广告组件相仿

*表示设置,其他为图片的设置 #：表示注释



----使用-----

$banner=new AdRotator();

echo $banner->GetAdvertisement("./banner.txt");

echo $banner->GetAdvertisement("./banner.txt");

echo $banner->GetAdvertisement("./banner.txt");

*/

?>  



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