雲物件儲存服務, BAT都有其業務, 本文選擇騰訊是因為騰訊有每月免費流量, 而阿里和百度都是需要先付費後使用, 另外新興的像七牛雲端儲存, 也是很不錯的解決方案.
貼程式碼

<?php
/**
 * Simple Tencent COS SDK
 * 2016/05/09
 * Author: hldh214 <[email protected]>
 */

// 配置項 start
$appid = '';
$bucket_name = '';
$dir_name = '';
$secretID = '';
$secretKey = '';
// 配置項 end

// 需要儲存的資源url, 這裡用百度logo來做演示
 

$pic_url = 'http://www.baidu.com/img/logo.gif';
// 獲取檔名
$filename = end(explode('/', $pic_url));
// 構造上傳url
$upload_url = "web.file.myqcloud.com/files/v1/$appid/$bucket_name/$dir_name/$filename";
// 設定過期時間
$exp = time() + 3600;
// 構造鑑權key
$sign = "a=$appid&b=$bucket_name&k=$secretID&e=$exp&t=" . time() . '&r='
 
 . rand() . "&f=/$appid/$bucket_name/$dir_name/$filename";
$sign = base64_encode(hash_hmac('SHA1', $sign, $secretKey, true) . $sign);
// 構造post資料
$post_data = [
    'op' => 'upload',
    'filecontent' => file_get_contents($pic_url),  // baidu logo
];
// 設定post的headers, 加入鑑權key
$header = [
    'Content-Type: multipart/form-data'
 
,
    'Authorization: ' . $sign,
];
// post
$ch = curl_init($upload_url);
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_HTTPHEADER, $header);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, $post_data);
$res = curl_exec($ch);
curl_close($ch);
$res = json_decode($res, true);
if (isset($res['data']['access_url'])) {
    // 成功, 輸出檔案url
    echo $res['data']['access_url'];
} else {
    // 失敗
    echo $res;
}