其实原理就是通过php的session判断,发帖前后不同的session值进行判断,需要的朋友可以自由发挥下
randimage.php
复制代码 代码如下:
/*
+---------------------------------------------------------+
| By Bleakwind
+---------------------------------------------------------+
*/
$dir = "images/";//图片目录,注意是按照名字排序显示的...
$imgwidth = 0;//图片宽度,为0则为原始大小
$iforder = 1;//顺序显示还是随机显示,1为顺序显示,0为随机显示
$ifcircle = 0;//顺序显示的时候是否循环播放,1为循环播放,0为不循环
session_start();
if($imgwidth==0){$imgwidth=="";}else{$imgwidth=="width='".$imgwidth."'";}
$handle=opendir($dir);
while ($file_name=readdir($handle)){
if(($file_name!==".")&&($file_name!=="..")){$file_list[]=$file_name; }
}
closedir($handle);
if($iforder==1){
if(isset($_SESSION['sess_order'])){
if($_SESSION['sess_order']
}else{
if($ifcircle == 1){
$_SESSION['sess_order']=0;
}
}
}else{
$_SESSION['sess_order']=0;
}
$i=$_SESSION['sess_order'];
}else{
$num=count($file_list)-1;
$i=rand(0,$num);
}
readfile($dir.$file_list[$i]);
?>
调用
复制代码 代码如下:

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