php上传文件至腾讯COS

最近初学php，看了一遍教程就开始撸代码，途中不断入坑，硬着头皮一个一个查。。。

PS：本人主要写前端，php小白，不喜勿喷，大神请绕道。。。

这不今天要写文件上传，由于前端要对接微信小程序，于是乎选择了腾讯的COS，一看文档一头雾水，不懂？那就顺着文档一步一步来。

第一步开发准备

SDK 获取

1. GitHub

#在GitHub中获取代码
https://github.com/tencentyun/cos-php-sdk-v5

将源代码放入您的项目目录下即可使用

2. Composer

在项目目录下，新建一个composer.json的文件，内容如下

#利用Composer下载
{"require": {"qcloud/cos-sdk-v5": ">=1.0"}
}

然后使用下面的命令进行安装：

composer install

好啦，第一步完成，还算简单。。。

第二步快速入门

可参照 Demo 程序，详见 GitHub 链接。

配置文件

#这里请填写cos-autoloader.php该文件所在的相对路径
require(__DIR__ . DIRECTORY_SEPARATOR . 'cos-autoloader.php');$cosClient = new Qcloud\Cos\Client(array('region' => getenv('COS_REGION'),'credentials'=> array('secretId'    => getenv('COS_KEY'),'secretKey' => getenv('COS_SECRET'))));

看到这里我就一脸懵逼，本来就不知道配置文件放哪，网上找了半天也不知道从哪入手，后来自己摸索，终于被自己啃出来。。。

在application里面找到配置文件config.php，添加如下代码，其中：region是你的COS所属地区，secretId和secretKey在你的API秘钥管理里面都可以找到。

然后在你的controller中引入cos，就可以直接在你的函数中使用啦~

use Qcloud\Cos\Client

/**

* 上传图片到腾讯云图片服务器

public function upload () {

$cosClient = new Client(config('tengxunyun'));

$file = request()->file('file');

if ($file) {

try {

$result = $cosClient->putObject(

[

'Bucket' => "bucket_name",

'Key' => date("Y-m-d") . "/" . md5(microtime()) . '.jpg',

'Body' => fopen($file->getInfo()['tmp_name'], 'rb'),

"ACL" => "public-read-write",

// "ContentType" => "image/jpeg"

]

);

return json(

[

"code" => 0,

"msg" => '上传成功',

"data" => [

"src" => str_replace("cos.ap-beijing", "picbj", $result['ObjectURL']),

"title" => ""

]

);

} catch (\Exception $e) {

return json(

[

"code" => 1,

"msg" => $e,

"data" => [

"src" => "",

"title" => ""

]

);

}

另外，官方提供了很多种上传文件及下载文件的方法，可以按需引用

上传文件

使用 putObject 接口上传文件(最大 5GB)；
使用 Upload 接口分块上传文件。

# 上传文件
## putObject(上传接口，最大支持上传5G文件)
### 上传内存中的字符串
try {$result = $cosClient->putObject(array('Bucket' => $bucket,'Key' => $key,'Body' => 'Hello World!'));print_r($result);
} catch (\Exception $e) {echo "$e\n";
}### 上传文件流
try {$result = $cosClient->putObject(array('Bucket' => $bucket,'Key' => $key,'Body' => fopen($local_path, 'rb')));print_r($result);
} catch (\Exception $e) {echo "$e\n";
}### 设置header和meta
try {$result = $cosClient->putObject(array('Bucket' => $bucket,'Key' => $key,'Body' => fopen($local_path, 'rb'),'ACL' => 'string','CacheControl' => 'string','ContentDisposition' => 'string','ContentEncoding' => 'string','ContentLanguage' => 'string','ContentLength' => integer,'ContentType' => 'string','Expires' => 'mixed type: string (date format)|int (unix timestamp)|\DateTime','GrantFullControl' => 'string','GrantRead' => 'string','GrantWrite' => 'string','Metadata' => array('string' => 'string',),'StorageClass' => 'string'));print_r($result);
} catch (\Exception $e) {echo "$e\n";
}## Upload(高级上传接口，默认使用分块上传最大支持50T)
### 上传内存中的字符串
try {$result = $cosClient->Upload($bucket = $bucket,$key = $key,$body = 'Hello World!');print_r($result);
} catch (\Exception $e) {echo "$e\n";
}### 上传文件流
try {$result = $cosClient->Upload($bucket = $bucket,$key = $key,$body = fopen($local_path, 'rb'));print_r($result);
} catch (\Exception $e) {echo "$e\n";
}### 设置header和meta
try {$result = $cosClient->upload($bucket= $bucket,$key = $key,$body = fopen($local_path, 'rb'),$options = array('ACL' => 'string','CacheControl' => 'string','ContentDisposition' => 'string','ContentEncoding' => 'string','ContentLanguage' => 'string','ContentLength' => integer,'ContentType' => 'string','Expires' => 'mixed type: string (date format)|int (unix timestamp)|\DateTime','GrantFullControl' => 'string','GrantRead' => 'string','GrantWrite' => 'string','Metadata' => array('string' => 'string',),'StorageClass' => 'string'));print_r($result);
} catch (\Exception $e) {echo "$e\n";
}

下载文件

使用 getObject 接口下载文件；
使用 getObjectUrl 接口获取文件下载 URL。

# 下载文件
## getObject(下载文件)
### 下载到内存
try {$result = $cosClient->getObject(array('Bucket' => $bucket,'Key' => $key));echo($result['Body']);
} catch (\Exception $e) {echo "$e\n";
}### 下载到本地
try {$result = $cosClient->getObject(array('Bucket' => $bucket,'Key' => $key,'SaveAs' => $local_path));
} catch (\Exception $e) {echo "$e\n";
}### 指定下载范围
/** Range 字段格式为 'bytes=a-b'*/
try {$result = $cosClient->getObject(array('Bucket' => $bucket,'Key' => $key,'Range' => 'bytes=0-10','SaveAs' => $local_path));
} catch (\Exception $e) {echo "$e\n";
}### 设置返回header
try {$result = $cosClient->getObject(array('Bucket' => $bucket,'Key' => $key,'ResponseCacheControl' => 'string','ResponseContentDisposition' => 'string','ResponseContentEncoding' => 'string','ResponseContentLanguage' => 'string','ResponseContentType' => 'string','ResponseExpires' => 'mixed type: string (date format)|int (unix timestamp)|\DateTime','SaveAs' => $local_path));
} catch (\Exception $e) {echo "$e\n";
}## getObjectUrl(获取文件UrL)
try {$url = "/{$key}";$request = $cosClient->get($url);$signedUrl = $cosClient->getObjectUrl($bucket, $key, '+10 minutes');echo ($signedUrl);} catch (\Exception $e) {echo "$e\n";
}