azure-storage-common/src/Common/Internal/Authentication/SharedKeyAuthScheme.php
protected function computeCanonicalizedResource($url, $queryParams)
    {
        $queryParams = array_change_key_case($queryParams);

        // 1. Beginning with an empty string (""), append a forward slash (/),
        //    followed by the name of the account that owns the accessed resource.
        $canonicalizedResource = '/' . $this->accountName;

        // 2. Append the resource's encoded URI path, without any query parameters.
        $canonicalizedResource .= parse_url($url, PHP_URL_PATH);

        // 3. Retrieve all query parameters on the resource URI, including the comp
        //    parameter if it exists.
        // 4. Sort the query parameters lexicographically by parameter name, in
        //    ascending order.
        if (count($queryParams) > 0) {
            ksort($queryParams);
        }

        // 5. Convert all parameter names to lowercase.
        // 6. URL-decode each query parameter name and value.
        // 7. Append each query parameter name and value to the string in the
        //    following format:
        //      parameter-name:parameter-value
        // 9. Group query parameters
        // 10. Append a new line character (\n) after each name-value pair.
        foreach ($queryParams as $key => $value) {
            // $value must already be ordered lexicographically
            // See: ServiceRestProxy::groupQueryValues
            $canonicalizedResource .= "\n" . $key . ':' . $value;
        }

        return $canonicalizedResource;
    }
protected function computeCanonicalizedResource($url, $queryParams)
    {
        $queryParams = array_change_key_case($queryParams);

        // 1. Beginning with an empty string (""), append a forward slash (/),
        //    followed by the name of the account that owns the accessed resource.
        $canonicalizedResource = '/' . $this->accountName;

        // 2. Append the resource's encoded URI path, without any query parameters.
        $canonicalizedResource .= parse_url($url, PHP_URL_PATH);

        // 3. Retrieve all query parameters on the resource URI, including the comp
        //    parameter if it exists.
        // 4. Sort the query parameters lexicographically by parameter name, in
        //    ascending order.
        if (count($queryParams) > 0) {
            ksort($queryParams);
        }

        // 5. Convert all parameter names to lowercase.
        // 6. URL-decode each query parameter name and value.
        // 7. Append each query parameter name and value to the string in the
        //    following format:
        //      parameter-name:parameter-value
        // 9. Group query parameters
        // 10. Append a new line character (\n) after each name-value pair.
        foreach ($queryParams as $key => $value) {
            // $value must already be ordered lexicographically
            // See: ServiceRestProxy::groupQueryValues
            $canonicalizedResource .= "\n" . $key . ':' . $value;
        }

        return $canonicalizedResource;
    }
Computes canonicalized resources from URL.

@param string $url         request url.
@param array  $queryParams request query variables.

@see Constructing the Canonicalized Resource String section at
http://msdn.microsoft.com/en-us/library/windowsazure/dd179428.aspx

@return string