PHP生成腾讯云COS接口需要的请求签名

/**
 * 计算签名
 * secretId、secretKey 为必需参数，qSignStart、qSignEnd为调试需要，测试通过后应取消，改为方法内自动创建
 */
function get_authorization( $secretId, $secretKey, $qSignStart, $qSignEnd, $fileUri, $headers ){
 /* 
 * 计算COS签名
 * 2018-05-17
 * author:cinlap cash216@163>
 * ref:https://cloud.tencent.com/document/product/436/7778
 */

 $qSignTime = "$qSignStart;$qSignEnd"; //unix_timestunix_timestamp
 $qKeyTime = $qSignTime;

 $header_list = get_q_header_list($headers);
 //如果 Uri 中带有 ?的请求参数，该处应为数组排序后的字符串组合
 $url_param_list = '';

 //compute signature
 $httpMethod = 'put';
 $httpUri = $fileUri;

 //与 q-url-param-list 相同
 $httpParameters = $url_param_list;

 //将自定义请求头分解为  连接的字符串
 $headerString = get_http_header_string( $headers );

 // 计算签名中的 signature 部分
 $signTime = $qSignTime;
 $signKey = hash_hmac('sha1', $signTime, $secretKey);
 $httpString = "$httpMethod\n$httpUri\n$httpParameters\n$headerString\n";
 $sha1edHttpString = sha1($httpString);
 $stringToSign = "sha1\n$signTime\n$sha1edHttpString\n";
 $signature = hash_hmac('sha1', $stringToSign, $signKey);
 //组合结果
 $authorization = "q-sign-algorithm=sha1q-ak=$secretIdq-sign-time=$qSignTimeq-key-time=$qKeyTimeq-header-list=$header_listq-url-param-list=$url_param_listq-signature=$signature";
 return $authorization;
}

/**
 * 按COS要求对header_list内容进行转换
 * 提取所有key
 * 字典排序
 * key转换为小写
 * 多对key=value之间用连接符连接
 * 
 */
function get_q_header_list($headers){
 if(!is_array($headers)){
  return false;
 }

 try{
  $tmpArray = array();
  foreach( $headers as $key=>$value){
   array_push($tmpArray, strtolower($key));
  }
  sort($tmpArray);
  return implode(';', $tmpArray);
 }
 catch(Exception $error){
  return false;
 }
}

/**
 * 按COS要求从数组中获取 Signature 中 [HttpString] 内容
 * 标准格式 key=valuekey=value... 
 * 数组元素按键字典排序 * 
 * key转换为小写
 * value进行UrlEncode转换
 * 转换为key=value格式
 * 多对key=value之间用连接符连接
 * 
 */
function get_http_header_string($headers){
 if(!is_array($headers)){
  return false;
 }

 try{
  $tmpArray = array();
  foreach($headers as $key => $value){
   $tmpKey = strtolower($key);
   $tmpArray[$tmpKey] = urlencode($value);
  }
  ksort($tmpArray);
  $headerArray = array();
  foreach( $tmpArray as $key => $value){
   array_push($headerArray, "$key=$value");
  }
  return implode('', $headerArray);
 }
 catch(Exception $error){
  return false;
 }
}

{
 "Authorization": "q-sign-algorithm=sha1q-ak=AKIDQjz3ltompVjBni5LitkWHFlFpwkn9U5qq-sign-time=1417773892;1417853898q-key-time=1417773892;1417853898q-header-list=host;x-cos-content-sha1;x-cos-storage-classq-url-param-list=q-signature=14e6ebd7955b0c6da532151bf97045e2c5a64e10",
 "Host": "bucket1-1254000000.cos.ap-beijing.myqcloud.com",
 "Content-Length": "12000"
}