jssdk下载微信服务器的资源

下载图片

public function downloadImg($type=".png"){
    $access_token = $this->get_access_token();
    $media_id = I('media_id'); 
    // 要存在你服务器哪个位置？ 
    $targetName = './Uploads/Weixin/'.date('Y_m_d').'/';//以日期来创建一层目录
    $filename = time(); 
    $filepath = C('Site_Url').'Uploads/Weixin/'.date('Y_m_d').'/'.$filename;
    if(!file_exists($targetName)){
        mkdir($targetName, 0777, true);
    }
    $timg = $targetName.$filename;
    $url="http://file.api.weixin.qq.com/cgi-bin/media/get?access_token={$access_token}&media_id={$media_id}";
    $ch = curl_init();  
    //curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'GET'); 
    $fp = fopen($timg.$type,'wb'); //'wb'表示已二进制方式打开新建 
    curl_setopt($ch,CURLOPT_URL,$url);  
    curl_setopt($ch,CURLOPT_FILE,$fp);  
    curl_setopt($ch,CURLOPT_HEADER,0);  
    curl_setopt($hander,CURLOPT_FOLLOWLOCATION,1);
    curl_setopt($hander,CURLOPT_TIMEOUT,60);
    $outpot = curl_exec($ch);  
    curl_close($ch);  
    fclose($fp);
    if( curl_errno($ch) ){
        $res = array (
            "code" => 1,
            "msg" => "下载失败",
            "data" => '',
            "media_id"=>$media_id,
        );
        $this->ajaxReturn($res);
    }else{
        $this->tpic($timg);
        $res = array (
            "code" => 0,
            "msg" => "成功",
            "data" => $filepath,
            "media_id"=>$media_id,
            "test1"=>$timg.$type
        );
        $this->ajaxReturn($res);
        
    }

}

图片加水印并压缩

public function tpic($timg){
    //压缩图片+水印
    $image = new \Think\Image(); 
    $image->open($timg.'.png')->thumb(200, 200,3)->save($timg.'_s.png');
    $image->open($timg.'.png')->water('./Public/images/logos.png',9,50)->save($timg.'.png');
}

下载音频文件

public function downloadFile($type=".amr"){
    $access_token = $this->get_access_token();
    $media_id = I('media_id'); 
    $url="http://file.api.weixin.qq.com/cgi-bin/media/get?access_token={$access_token}&media_id={$media_id}";
    $ch = curl_init();  
    curl_setopt($ch, CURLOPT_URL, $url);  
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);  
    curl_setopt($ch, CURLOPT_HEADER, TRUE);    //需要response header  
    curl_setopt($ch, CURLOPT_NOBODY, FALSE);    //需要response body  
    curl_setopt($hander,CURLOPT_FOLLOWLOCATION,1);
    curl_setopt($hander,CURLOPT_TIMEOUT,60);
    $response = curl_exec($ch);  
  
    //分离header与body  
    $header = '';  
    $body = '';  
    if (curl_getinfo($ch, CURLINFO_HTTP_CODE) == '200') {  
        $headerSize = curl_getinfo($ch, CURLINFO_HEADER_SIZE); //头信息size  
        $header = substr($response, 0, $headerSize);  
        $body = substr($response, $headerSize);  
    }  
  
    curl_close($ch);  
  
    //文件名  
    if (preg_match('/filename="(.*?)"/', $header, $arr)) {  

        $targetName = './Uploads/Weixin/'.date('Y_m_d').'/';//以日期来创建一层目录
        $filename = time(); 
        $filepath = C('Site_Url').'Uploads/Weixin/'.date('Y_m_d').'/'.$filename;
        if(!file_exists($targetName)){
            mkdir($targetName, 0777, true);
        }

        $timg = $targetName.$filename;
        if (file_put_contents($timg, $body)) {  
            $res = array (
                "code" => 0,
                "msg" => "成功",
                "data" => $filepath,
                "media_id"=>$media_id,
                "test1"=>$timg.$type
            );
            $this->ajaxReturn($res);
        }else{
            $res = array (
                "code" => 1,
                "msg" => "下载失败",
                "data" => '',
                "media_id"=>$media_id,
            );
            $this->ajaxReturn($res);
        }
    }  
    
}

下载base64图片

public function uploadbase64Img($thumb=TRUE,$thumbtype=3) {	
	$data =$_POST['data'];
	$data = trim($data);
	if(empty($data)){
		echo '{"code":0,"msg":"图片数据为空！"}';
		exit();
	}
	$imgname = uniqid () . '.png';; //图片保存名称
	$new_file = 'uploads/'. date('Ymd').'/';
	if (!file_exists($new_file)) {
		mkdir($new_file, 0777, true);
	}		
	$base64_image_content = chunk_split($data);
	if (preg_match('/^(data:\s*image\/(\w+);base64,)/',$data, $result)) {
		$type = $result[2];
		$new_file = './'.$new_file. $imgname;
		if (file_put_contents($new_file, base64_decode(str_replace($result[1], '', $base64_image_content)))) {
			$imgattr=getimagesize($new_file);//校验下图片是否生成			
			if ($imgattr) {
				imageWaterMark ( $new_file, $wx ['name'] );
			}else{
				echo '{"code":0,"msg":"数据转图片失败！"}';
				exit();
			}
			if (!empty ($thumb)) {
				$image = new Image(); // 实例化图片类对象
				if ($imgattr) {
					$image = $image->open ( $new_file );
					$image_thumb = $image->thumb ( 260, 260, $thumbtype);
					$thunbname = str_replace('.png', '_t.png', $imgname);
					$imgpath_thumb = 'uploads/'. date('Ymd').'/'. $thunbname;
					$image->save ( $imgpath_thumb );
				}
			}
			
			
		} else {
			echo '{"code":0,"msg":"上传失败！"}';
			exit();
		}
	}
	if ($new_file) {
		$res ['code'] = 0;
		$res ['msg'] = '成功';
		$res ['data'] = $new_file;
	}else{
		$res ['code'] = 101;
		$res ['msg'] = '失败';
	}

	echo json_encode ( $res );
}