只需要掌握两个方法：opendir  【打开目录】  readdir【读取目录下的文件】

$path1 = 'dir';

$handle = opendir($path1);
	while (false !== ($file = readdir($handle))) {
		$tmp =explode(".",$file);
		if($tmp[1] == 'jpg'){
		    echo "<img src='".$path1.'/'.iconv('GBK','UTF-8',$file)."'/>";
			echo "<center style='font-size:16px;font-weight:bold;padding:20px 0;background:white;margin-top:-10px;'>".iconv('GBK','UTF-8',$file)."</center>";
		}
	}