K9 有水印图片和无水印图片调用标签 有图有真相

用了感觉有点神奇。。。

<img  src="{DIR}images/?id={$rs[image]}" alt="{$rs[name] code='quode'}" width="120" height="90" />

 <img src="{DIR}{$rs[image] width='120'  height='90'}" alt="{$rs[name] code='quode'}"/>

//当宽高都未指定的时候，直接读取图片(这个是带水印的图)
	if(empty($width) && empty($height)){
		//水印
		$water=imagecreatefrompng(ROOT.'images/water.png');
		$color=imagecolorallocatealpha($water,255,255,255,0);
		list($ww, $wh) = getimagesize(ROOT.'images/water.png');
		imagecolortransparent($water,$color);
		
		if($_width>$ww+20 && $_height>$wh+20){
			imagesavealpha($source,true);
			$wx=$_width-$ww-10;
			$wy=$_height-$wh-10;
			imagecopy($source,$water,$wx,$wy,0,0,$ww,$wh);
		}
		
		ob_end_clean();
		header('Content-Type: image/png');
		imagepng($source);
		
		$file=new file;
		$file->md(dirname($filepath));//创建目录
		
		imagepng($source,ROOT.$filepath);
		exit;
	}