private function validate_content($options) { if (isset($options[self::OSS_CONTENT])) { if ($options[self::OSS_CONTENT] == '' || !is_string($options[self::OSS_CONTENT])) { throw new OSS_Exception(OSS_INVALID_HTTP_BODY_CONTENT, '-600'); } } else { throw new OSS_Exception(OSS_NOT_SET_HTTP_CONTENT, '-601'); } }