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首页  >  文章  >  后端开发  >  七牛云存储官方接口PHP版本_PHP教程

七牛云存储官方接口PHP版本_PHP教程

WBOY
WBOY原创
2016-07-20 11:16:10989浏览

PHP SDKv6

此 SDK 适用于 PHP 5.1.0 及其以上版本。基于 七牛云存储官方API 构建。使用此 SDK 构建您的网络应用程序，能让您以非常便捷地方式将数据安全地存储到七牛云存储上。无论您的网络应用是一个网站程序，还是包括从云端（服务端程序）到终端（手持设备应用）的架构的服务或应用，通过七牛云存储及其 SDK，都能让您应用程序的终端用户高速上传和下载，同时也让您的服务端更加轻盈。

SDK源码地址：https://github.com/qiniu/php-sdk/tags

  • 应用接入
    • 获取Access Key 和 Secret Key
  • 资源管理接口
    • 1 查看单个文件属性信息
    • 2 复制单个文件
    • 3 移动单个文件
    • 4 删除单个文件
  • 上传下载接口
    • 1 文件上传
      • 1.1 上传流程
      • 1.2 上传策略
    • 2 文件下载
      • 2.1 公有资源下载
      • 2.2 私有资源下载
  • 数据处理接口
    • 1 图像
      • 1.1 查看图像属性
      • 1.2 查看图片EXIF信息
      • 1.3 生成图片预览
  • 贡献代码
  • 许可证

应用接入

1. 获取Access Key 和 Secret Key

要接入七牛云存储，您需要拥有一对有效的 Access Key 和 Secret Key 用来进行签名认证。可以通过如下步骤获得：

资源管理接口

1.查看单个文件属性信息

示例代码如下：

<code class="php"><span class="keyword">require_once</span>(<span class="string">"qiniu/rs.php"</span>);

<span class="variable">$bucket</span> = <span class="string">"phpsdk"</span>;
<span class="variable">$key</span> = <span class="string">"pic.jpg"</span>;
<span class="variable">$accessKey</span> = <span class="string">'<YOUR_APP_ACCESS_KEY>'</span>;
<span class="variable">$secretKey</span> = <span class="string">'<YOUR_APP_SECRET_KEY>'</span>;

Qiniu_SetKeys(<span class="variable">$accessKey</span>, <span class="variable">$secretKey</span>);
<span class="variable">$client</span> = <span class="keyword">new</span> Qiniu_MacHttpClient(<span class="keyword">null</span>);

<span class="keyword">list</span>(<span class="variable">$ret</span>, <span class="variable">$err</span>) = Qiniu_RS_Stat(<span class="variable">$client</span>, <span class="variable">$bucket</span>, <span class="variable">$key</span>);
<span class="keyword">echo</span> <span class="string">"Qiniu_RS_Stat result: \n"</span>;
<span class="keyword">if</span> (<span class="variable">$err</span> !== <span class="keyword">null</span>) {
    var_dump(<span class="variable">$err</span>);
} <span class="keyword">else</span> {
    var_dump(<span class="variable">$ret</span>);
}
</code>

2. 复制单个文件

示例代码如下：

<code class="php"><span class="keyword">require_once</span>(<span class="string">"qiniu/rs.php"</span>);

<span class="variable">$bucket</span> = <span class="string">"phpsdk"</span>;
<span class="variable">$key</span> = <span class="string">"pic.jpg"</span>;
<span class="variable">$key1</span> = <span class="string">"file_name1"</span>;
<span class="variable">$accessKey</span> = <span class="string">'<YOUR_APP_ACCESS_KEY>'</span>;
<span class="variable">$secretKey</span> = <span class="string">'<YOUR_APP_SECRET_KEY>'</span>;

Qiniu_SetKeys(<span class="variable">$accessKey</span>, <span class="variable">$secretKey</span>);
<span class="variable">$client</span> = <span class="keyword">new</span> Qiniu_MacHttpClient(<span class="keyword">null</span>);

<span class="variable">$err</span> = Qiniu_RS_Copy(<span class="variable">$client</span>, <span class="variable">$bucket</span>, <span class="variable">$key</span>, <span class="variable">$bucket</span>, <span class="variable">$key1</span>);
<span class="keyword">echo</span> <span class="string">"====> Qiniu_RS_Copy result: \n"</span>;
<span class="keyword">if</span> (<span class="variable">$err</span> !== <span class="keyword">null</span>) {
    var_dump(<span class="variable">$err</span>);
} <span class="keyword">else</span> {
    <span class="keyword">echo</span> <span class="string">"Success!"</span>;
}
</code>

3. 移动单个文件

示例代码如下：

<code class="php"><span class="keyword">require_once</span>(<span class="string">"qiniu/rs.php"</span>);

<span class="variable">$bucket</span> = <span class="string">"phpsdk"</span>;
<span class="variable">$key</span> = <span class="string">"pic.jpg"</span>;
<span class="variable">$key1</span> = <span class="string">"file_name1"</span>;
<span class="variable">$accessKey</span> = <span class="string">'<YOUR_APP_ACCESS_KEY>'</span>;
<span class="variable">$secretKey</span> = <span class="string">'<YOUR_APP_SECRET_KEY>'</span>;

Qiniu_SetKeys(<span class="variable">$accessKey</span>, <span class="variable">$secretKey</span>);
<span class="variable">$client</span> = <span class="keyword">new</span> Qiniu_MacHttpClient(<span class="keyword">null</span>);

<span class="variable">$err</span> = Qiniu_RS_Move(<span class="variable">$client</span>, <span class="variable">$bucket</span>, <span class="variable">$key</span>, <span class="variable">$bucket</span>, <span class="variable">$key1</span>);
<span class="keyword">echo</span> <span class="string">"====> Qiniu_RS_Move result: \n"</span>;
<span class="keyword">if</span> (<span class="variable">$err</span> !== <span class="keyword">null</span>) {
    var_dump(<span class="variable">$err</span>);
} <span class="keyword">else</span> {
    <span class="keyword">echo</span> <span class="string">"Success!"</span>;
}
</code>

4. 删除单个文件

示例代码如下：

<code class="php"><span class="keyword">require_once</span>(<span class="string">"qiniu/rs.php"</span>);

<span class="variable">$bucket</span> = <span class="string">"phpsdk"</span>;
<span class="variable">$key1</span> = <span class="string">"file_name1"</span>;
<span class="variable">$accessKey</span> = <span class="string">'<YOUR_APP_ACCESS_KEY>'</span>;
<span class="variable">$secretKey</span> = <span class="string">'<YOUR_APP_SECRET_KEY>'</span>;

Qiniu_SetKeys(<span class="variable">$accessKey</span>, <span class="variable">$secretKey</span>);
<span class="variable">$client</span> = <span class="keyword">new</span> Qiniu_MacHttpClient(<span class="keyword">null</span>);

<span class="variable">$err</span> = Qiniu_RS_Delete(<span class="variable">$client</span>, <span class="variable">$bucket</span>, <span class="variable">$key1</span>);
<span class="keyword">echo</span> <span class="string">"====> Qiniu_RS_Delete result: \n"</span>;
<span class="keyword">if</span> (<span class="variable">$err</span> !== <span class="keyword">null</span>) {
    var_dump(<span class="variable">$err</span>);
} <span class="keyword">else</span> {
    <span class="keyword">echo</span> <span class="string">"Success!"</span>;
}
</code>

上传下载接口

###1. 文件上传

为了尽可能地改善终端用户的上传体验，七牛云存储首创了客户端直传功能。一般云存储的上传流程是：

<code class="php">客户端（终端用户） => 业务服务器 => 云存储服务
</code>

这样多了一次上传的流程，和本地存储相比，会相对慢一些。但七牛引入了客户端直传，将整个上传过程调整为：

<code class="php">客户端（终端用户） => 七牛 => 业务服务器
</code>

客户端（终端用户）直接上传到七牛的服务器，通过DNS智能解析，七牛会选择到离终端用户最近的ISP服务商节点，速度会比本地存储快很多。文件上传成功以后，七牛的服务器使用回调功能，只需要将非常少的数据（比如Key）传给应用服务器，应用服务器进行保存即可。

1.1上传流程

在七牛云存储中，整个上传流程大体分为这样几步：

需要注意的是，回调到业务服务器的过程是可选的，它取决于业务服务器颁发的 uptoken。如果没有回调，七牛会返回一些标准的信息（比如文件的 hash）给客户端。如果上传发生在业务服务器，以上流程可以自然简化为：

服务端生成 uptoken 代码如下：

<code class="php"><span class="keyword">require_once</span>(<span class="string">"qiniu/rs.php"</span>);

<span class="variable">$bucket</span> = <span class="string">'phpsdk'</span>;
<span class="variable">$accessKey</span> = <span class="string">'<YOUR_APP_ACCESS_KEY>'</span>;
<span class="variable">$secretKey</span> = <span class="string">'<YOUR_APP_SECRET_KEY>'</span>;

Qiniu_SetKeys(<span class="variable">$accessKey</span>, <span class="variable">$secretKey</span>);
<span class="variable">$putPolicy</span> = <span class="keyword">new</span> Qiniu_RS_PutPolicy(<span class="variable">$bucket</span>);
<span class="variable">$upToken</span> = <span class="variable">$putPolicy</span>->Token(<span class="keyword">null</span>);
</code>

上传文件到七牛（通常是客户端完成，但也可以发生在服务端）：

上传字符串

<code class="php"><span class="keyword">require_once</span>(<span class="string">"qiniu/io.php"</span>);
<span class="keyword">require_once</span>(<span class="string">"qiniu/rs.php"</span>);

<span class="variable">$bucket</span> = <span class="string">"phpsdk"</span>;
<span class="variable">$key1</span> = <span class="string">"file_name1"</span>;
<span class="variable">$accessKey</span> = <span class="string">'<YOUR_APP_ACCESS_KEY>'</span>;
<span class="variable">$secretKey</span> = <span class="string">'<YOUR_APP_SECRET_KEY>'</span>;

Qiniu_SetKeys(<span class="variable">$accessKey</span>, <span class="variable">$secretKey</span>);
<span class="variable">$putPolicy</span> = <span class="keyword">new</span> Qiniu_RS_PutPolicy(<span class="variable">$bucket</span>);
<span class="variable">$upToken</span> = <span class="variable">$putPolicy</span>->Token(<span class="keyword">null</span>);
<span class="keyword">list</span>(<span class="variable">$ret</span>, <span class="variable">$err</span>) = Qiniu_Put(<span class="variable">$upToken</span>, <span class="variable">$key1</span>, <span class="string">"Qiniu Storage!"</span>, <span class="keyword">null</span>);
<span class="keyword">echo</span> <span class="string">"====> Qiniu_Put result: \n"</span>;
<span class="keyword">if</span> (<span class="variable">$err</span> !== <span class="keyword">null</span>) {
    var_dump(<span class="variable">$err</span>);
} <span class="keyword">else</span> {
    var_dump(<span class="variable">$ret</span>);
}
</code>

上传本地文件

<code class="php"><span class="keyword">require_once</span>(<span class="string">"qiniu/io.php"</span>);
<span class="keyword">require_once</span>(<span class="string">"qiniu/rs.php"</span>);

<span class="variable">$bucket</span> = <span class="string">"phpsdk"</span>;
<span class="variable">$key1</span> = <span class="string">"file_name1"</span>;
<span class="variable">$accessKey</span> = <span class="string">'<YOUR_APP_ACCESS_KEY>'</span>;
<span class="variable">$secretKey</span> = <span class="string">'<YOUR_APP_SECRET_KEY>'</span>;

Qiniu_SetKeys(<span class="variable">$accessKey</span>, <span class="variable">$secretKey</span>);
<span class="variable">$putPolicy</span> = <span class="keyword">new</span> Qiniu_RS_PutPolicy(<span class="variable">$bucket</span>);
<span class="variable">$upToken</span> = <span class="variable">$putPolicy</span>->Token(<span class="keyword">null</span>);
<span class="variable">$putExtra</span> = <span class="keyword">new</span> Qiniu_PutExtra();
<span class="variable">$putExtra</span>->Crc32 = <span class="number">1</span>;
<span class="keyword">list</span>(<span class="variable">$ret</span>, <span class="variable">$err</span>) = Qiniu_PutFile(<span class="variable">$upToken</span>, <span class="variable">$key1</span>, __file__, <span class="variable">$putExtra</span>);
<span class="keyword">echo</span> <span class="string">"====> Qiniu_PutFile result: \n"</span>;
<span class="keyword">if</span> (<span class="variable">$err</span> !== <span class="keyword">null</span>) {
    var_dump(<span class="variable">$err</span>);
} <span class="keyword">else</span> {
    var_dump(<span class="variable">$ret</span>);
}
</code>

1.2 上传策略

uptoken 实际上是用 AccessKey/SecretKey 进行数字签名的上传策略(Qiniu_RS_PutPolicy)，它控制则整个上传流程的行为。让我们快速过一遍你都能够决策啥：

<code class="php"><span class="class"><span class="keyword">class</span> <span class="title">Qiniu_RS_PutPolicy</span>
{</span>
    <span class="keyword">public</span> <span class="variable">$Scope</span>;              <span class="comment">// 必选项。可以是 bucketName 或者 bucketName:key</span>
    <span class="keyword">public</span> <span class="variable">$CallbackUrl</span>;        <span class="comment">// 可选</span>
    <span class="keyword">public</span> <span class="variable">$CallbackBody</span>;       <span class="comment">// 可选</span>
    <span class="keyword">public</span> <span class="variable">$ReturnUrl</span>;          <span class="comment">// 可选， 更贴切的名字是 redirectUrl。</span>
    <span class="keyword">public</span> <span class="variable">$ReturnBody</span>;         <span class="comment">// 可选</span>
    <span class="keyword">public</span> <span class="variable">$AsyncOps</span>;           <span class="comment">// 可选</span>
    <span class="keyword">public</span> <span class="variable">$EndUser</span>;            <span class="comment">// 可选</span>
    <span class="keyword">public</span> <span class="variable">$Expires</span>;            <span class="comment">// 可选。默认是 3600 秒</span>
}
</code>
  • scope 限定客户端的权限。如果 scope 是 bucket，则客户端只能新增文件到指定的 bucket，不能修改文件。如果 scope 为 bucket:key，则客户端可以修改指定的文件。
  • callbackUrl 设定业务服务器的回调地址，这样业务服务器才能感知到上传行为的发生。
  • callbackBody 设定业务服务器的回调信息。文件上传成功后，七牛向业务服务器的callbackUrl发送的POST请求携带的数据。支持 魔法变量 和 自定义变量。
  • returnUrl 设置用于浏览器端文件上传成功后，浏览器执行301跳转的URL，一般为 HTML Form 上传时使用。文件上传成功后浏览器会自动跳转到 returnUrl?upload_ret=returnBody。
  • returnBody 可调整返回给客户端的数据包，支持 魔法变量 和 自定义变量。returnBody 只在没有 callbackUrl 时有效（否则直接返回 callbackUrl 返回的结果）。不同情形下默认返回的 returnBody 并不相同。在一般情况下返回的是文件内容的 hash，也就是下载该文件时的 etag；但指定 returnUrl 时默认的 returnBody 会带上更多的信息。
  • asyncOps 可指定上传完成后，需要自动执行哪些数据处理。这是因为有些数据处理操作（比如音视频转码）比较慢，如果不进行预转可能第一次访问的时候效果不理想，预转可以很大程度改善这一点。

关于上传策略更完整的说明，请参考 uptoken。

2. 文件下载

七牛云存储上的资源下载分为 公有资源下载 和 私有资源下载 。

私有（private）是 Bucket（空间）的一个属性，一个私有 Bucket 中的资源为私有资源，私有资源不可匿名下载。

新创建的空间（Bucket）缺省为私有，也可以将某个 Bucket 设为公有，公有 Bucket 中的资源为公有资源，公有资源可以匿名下载。

2.1 公有资源下载

如果在给bucket绑定了域名的话，可以通过以下地址访问。

<code class="xml">[GET] http://<span class="tag"><<span class="title">domain</span>></span>/<span class="tag"><<span class="title">key</span>></span>
</code>

示例代码：

<code class="ruby"><span class="variable">$key</span> = <span class="string">'pic.jpg'</span>;
<span class="variable">$domain</span> = <span class="string">'phpsdk.qiniudn.com'</span>;
<span class="regexp">//</span><span class="variable">$baseUrl</span> 就是您要访问资源的地址
<span class="variable">$baseUrl</span> = <span class="constant">Qiniu_RS_MakeBaseUrl</span>(<span class="variable">$domain</span>, <span class="variable">$key</span>);
</code>

其中可以到七牛云存储开发者自助网站绑定, 域名可以使用自己一级域名的或者是由七牛提供的二级域名(<bucket>.qiniudn.com</bucket>)。注意，尖括号不是必需，代表替换项。

2.2 私有资源下载

私有资源必须通过临时下载授权凭证(downloadToken)下载，如下：

<code class="xml">[GET] http://<span class="tag"><<span class="title">domain</span>></span>/<span class="tag"><<span class="title">key</span>></span>?e=<span class="tag"><<span class="title">deadline</span>></span>&token=<span class="tag"><<span class="title">downloadToken</span>></span>
</code>

注意，尖括号不是必需，代表替换项。
私有下载链接可以使用 SDK 提供的如下方法生成：

<code class="php"><span class="keyword">require_once</span>(<span class="string">"qiniu/rs.php"</span>);

<span class="variable">$key</span> = <span class="string">'pic.jpg'</span>;
<span class="variable">$domain</span> = <span class="string">'phpsdk.qiniudn.com'</span>;
<span class="variable">$accessKey</span> = <span class="string">'<YOUR_APP_ACCESS_KEY>'</span>;
<span class="variable">$secretKey</span> = <span class="string">'<YOUR_APP_SECRET_KEY>'</span>;

Qiniu_SetKeys(<span class="variable">$accessKey</span>, <span class="variable">$secretKey</span>);  
<span class="variable">$baseUrl</span> = Qiniu_RS_MakeBaseUrl(<span class="variable">$domain</span>, <span class="variable">$key</span>);
<span class="variable">$getPolicy</span> = <span class="keyword">new</span> Qiniu_RS_GetPolicy();
<span class="variable">$privateUrl</span> = <span class="variable">$getPolicy</span>->MakeRequest(<span class="variable">$baseUrl</span>, <span class="keyword">null</span>);
<span class="keyword">echo</span> <span class="string">"====> getPolicy result: \n"</span>;
<span class="keyword">echo</span> <span class="variable">$privateUrl</span> . <span class="string">"\n"</span>;
</code>

数据处理接口

七牛支持在云端对图像, 视频, 音频等富媒体进行个性化处理

1. 图像

1.1 查看图像属性

<code class="php"><span class="keyword">require_once</span>(<span class="string">"qiniu/rs.php"</span>);
<span class="keyword">require_once</span>(<span class="string">"qiniu/fop.php"</span>);

<span class="variable">$key</span> = <span class="string">'pic.jpg'</span>;
<span class="variable">$domain</span> = <span class="string">'phpsdk.qiniudn.com'</span>;
<span class="variable">$accessKey</span> = <span class="string">'<YOUR_APP_ACCESS_KEY>'</span>;
<span class="variable">$secretKey</span> = <span class="string">'<YOUR_APP_SECRET_KEY>'</span>;

Qiniu_SetKeys(<span class="variable">$accessKey</span>, <span class="variable">$secretKey</span>);  
<span class="comment">//生成baseUrl</span>
<span class="variable">$baseUrl</span> = Qiniu_RS_MakeBaseUrl(<span class="variable">$domain</span>, <span class="variable">$key</span>);

<span class="comment">//生成fopUrl</span>
<span class="variable">$imgInfo</span> = <span class="keyword">new</span> Qiniu_ImageInfo;
<span class="variable">$imgInfoUrl</span> = <span class="variable">$imgInfo</span>->MakeRequest(<span class="variable">$baseUrl</span>);

<span class="comment">//对fopUrl 进行签名，生成privateUrl。 公有bucket 此步可以省去。</span>
<span class="variable">$getPolicy</span> = <span class="keyword">new</span> Qiniu_RS_GetPolicy();
<span class="variable">$imgInfoPrivateUrl</span> = <span class="variable">$getPolicy</span>->MakeRequest(<span class="variable">$imgInfoUrl</span>, <span class="keyword">null</span>);
<span class="keyword">echo</span> <span class="string">"====> imageInfo privateUrl: \n"</span>;
<span class="keyword">echo</span> <span class="variable">$imgInfoPrivateUrl</span> . <span class="string">"\n"</span>;
</code>

将$imgInfoPrivateUrl粘贴到浏览器地址栏中就可以查看该图像的信息了。

1.2 查看图片EXIF信息

<code class="php"><span class="keyword">require_once</span>(<span class="string">"qiniu/rs.php"</span>);
<span class="keyword">require_once</span>(<span class="string">"qiniu/fop.php"</span>);

<span class="variable">$key</span> = <span class="string">'pic.jpg'</span>;
<span class="variable">$domain</span> = <span class="string">'phpsdk.qiniudn.com'</span>;
<span class="variable">$accessKey</span> = <span class="string">'<YOUR_APP_ACCESS_KEY>'</span>;
<span class="variable">$secretKey</span> = <span class="string">'<YOUR_APP_SECRET_KEY>'</span>;

Qiniu_SetKeys(<span class="variable">$accessKey</span>, <span class="variable">$secretKey</span>);  
<span class="comment">//生成baseUrl</span>
<span class="variable">$baseUrl</span> = Qiniu_RS_MakeBaseUrl(<span class="variable">$domain</span>, <span class="variable">$key</span>);

<span class="comment">//生成fopUrl</span>
<span class="variable">$imgExif</span> = <span class="keyword">new</span> Qiniu_Exif;
<span class="variable">$imgExifUrl</span> = <span class="variable">$imgExif</span>->MakeRequest(<span class="variable">$baseUrl</span>);

<span class="comment">//对fopUrl 进行签名，生成privateUrl。 公有bucket 此步可以省去。</span>
<span class="variable">$getPolicy</span> = <span class="keyword">new</span> Qiniu_RS_GetPolicy();
<span class="variable">$imgExifPrivateUrl</span> = <span class="variable">$getPolicy</span>->MakeRequest(<span class="variable">$imgExifUrl</span>, <span class="keyword">null</span>);
<span class="keyword">echo</span> <span class="string">"====> imageView privateUrl: \n"</span>;
<span class="keyword">echo</span> <span class="variable">$imgExifPrivateUrl</span> . <span class="string">"\n"</span>;
</code>

1.3 生成图片预览

<code class="php"><span class="keyword">require_once</span>(<span class="string">"qiniu/rs.php"</span>);
<span class="keyword">require_once</span>(<span class="string">"qiniu/fop.php"</span>);

<span class="variable">$key</span> = <span class="string">'pic.jpg'</span>;
<span class="variable">$domain</span> = <span class="string">'phpsdk.qiniudn.com'</span>;
<span class="variable">$accessKey</span> = <span class="string">'<YOUR_APP_ACCESS_KEY>'</span>;
<span class="variable">$secretKey</span> = <span class="string">'<YOUR_APP_SECRET_KEY>'</span>;

Qiniu_SetKeys(<span class="variable">$accessKey</span>, <span class="variable">$secretKey</span>);  
<span class="comment">//生成baseUrl</span>
<span class="variable">$baseUrl</span> = Qiniu_RS_MakeBaseUrl(<span class="variable">$domain</span>, <span class="variable">$key</span>);

<span class="comment">//生成fopUrl</span>
<span class="variable">$imgView</span> = <span class="keyword">new</span> Qiniu_ImageView;
<span class="variable">$imgView</span>->Mode = <span class="number">1</span>;
<span class="variable">$imgView</span>->Width = <span class="number">60</span>;
<span class="variable">$imgView</span>->Height = <span class="number">120</span>;
<span class="variable">$imgViewUrl</span> = <span class="variable">$imgView</span>->MakeRequest(<span class="variable">$baseUrl</span>);

<span class="comment">//对fopUrl 进行签名，生成privateUrl。 公有bucket 此步可以省去。</span>
<span class="variable">$getPolicy</span> = <span class="keyword">new</span> Qiniu_RS_GetPolicy();
<span class="variable">$imgViewPrivateUrl</span> = <span class="variable">$getPolicy</span>->MakeRequest(<span class="variable">$imgViewUrl</span>, <span class="keyword">null</span>);
<span class="keyword">echo</span> <span class="string">"====> imageView privateUrl: \n"</span>;
<span class="keyword">echo</span> <span class="variable">$imgViewPrivateUrl</span> . <span class="string">"\n"</span>;
</code>

贡献代码

许可证

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