拷贝小文件

对于小于 1GB 的文件，您可以通过 $ossClient->copyObject 方法将文件从一个存储空间（源存储空间）复制到同一地域的另一个存储空间（目标存储空间）。

以下代码用于拷贝小文件：

<?php
if (is_file(__DIR__ . '/../autoload.php')) {
    require_once __DIR__ . '/../autoload.php';
}
if (is_file(__DIR__ . '/../vendor/autoload.php')) {
    require_once __DIR__ . '/../vendor/autoload.php';
}

use OSS\OssClient;
use OSS\Core\OssException;

// 阿里云主账号AccessKey拥有所有API的访问权限，风险很高。强烈建议您创建并使用RAM账号进行API访问或日常运维，请登录 https://console.cloud.tmall.com 创建RAM账号。
$accessKeyId = "<yourAccessKeyId>";
$accessKeySecret = "<yourAccessKeySecret>";
// Endpoint以杭州为例，其它Region请按实际情况填写。
$endpoint = "http://oss-cn-hangzhou.aliyuncs.com";
$from_bucket = "<yourFromBucketName>";
$from_object = "<yourFromObjectName>";
$to_bucket = $bucket;
$to_object = $from_object . '.copy';

try{
    $ossClient = new OssClient($accessKeyId, $accessKeySecret, $endpoint);

    $ossClient->copyObject($from_bucket, $from_object, $to_bucket, $to_object);
} catch(OssException $e) {
    printf(__FUNCTION__ . ": FAILED\n");
    printf($e->getMessage() . "\n");
    return;
}
print(__FUNCTION__ . ": OK" . "\n");

有关拷贝小文件的详情，请参见CopyObject。

拷贝大文件

对于大于1GB的文件，需要使用分片拷贝（UploadPartCopy）。分片拷贝分为三步：

1. 通过$ossClient->initiateMultipartUpload初始化分片拷贝任务。
2. 通过$ossClient->uploadPartCopy进行分片拷贝。除最后一个分片外，其它分片都要大于100KB。
3. 通过$ossClient->completeMultipartUpload提交分片拷贝任务。

以下代码用于分片拷贝：

<?php
if (is_file(__DIR__ . '/../autoload.php')) {
    require_once __DIR__ . '/../autoload.php';
}
if (is_file(__DIR__ . '/../vendor/autoload.php')) {
    require_once __DIR__ . '/../vendor/autoload.php';
}

use OSS\OssClient;
use OSS\Core\OssException;

// 阿里云主账号AccessKey拥有所有API的访问权限，风险很高。强烈建议您创建并使用RAM账号进行API访问或日常运维，请登录 https://console.cloud.tmall.com 创建RAM账号。$accessKeyId = "<yourAccessKeyId>";
$accessKeySecret = "<yourAccessKeySecret>";
// Endpoint以杭州为例，其它Region请按实际情况填写。
$endpoint = "http://oss-cn-hangzhou.aliyuncs.com";
$src_bucket = "<yourSourceBucketName>";
$src_object = "<yourSourceObjectName>";
$dst_bucket = "<yourDestinationBucketName>";
$dst_object = "<yourDestinationObjectName>";

// 根据实际情况设置分片大小。
$part_size = 256*1024*1024;

try{
    $ossClient = new OssClient($accessKeyId, $accessKeySecret, $endpoint);

    $objectMeta = $ossClient->getObjectMeta($src_bucket, $src_object);

    $length = $objectMeta['content-length'] + 0;

    // 初始化分片。
    $upload_id = $ossClient->initiateMultipartUpload($dst_bucket, $dst_object);

    // 逐个分片拷贝。
    $pieces = $ossClient->generateMultiuploadParts($length, $part_size);
    $response_upload_part = array();
    $copyId = 1;
    $upload_position = 0;

    foreach ($pieces as $i => $piece) {
        $from_pos = $upload_position + (integer)$piece['seekTo'];
        $to_pos = (integer)$piece['length'] + $from_pos - 1;
        $up_options = array(
            'start' => $from_pos,
            'end' => $to_pos,
        );
        $response_upload_part[] = $ossClient->uploadPartCopy( $src_bucket, $src_object, $dst_bucket, $dst_object, $copyId, $upload_id, $up_options);
        $copyId = $copyId + 1;
    }

    // 完成分片拷贝。
    $upload_parts = array();
    foreach ($response_upload_part as $i => $etag) {
        $upload_parts[] = array(
            'PartNumber' => ($i + 1),
            'ETag' => $etag,
        );
    }
    $result = $ossClient->completeMultipartUpload($dst_bucket, $dst_object, $upload_id, $upload_parts);
} catch(OssException $e) {
    printf(__FUNCTION__ . ": FAILED\n");
    printf($e->getMessage() . "\n");
    return;
}
print(__FUNCTION__ . ": OK" . "\n");

有关拷贝大文件的详情，请参见UploadPartCopy。