(PECL pecl_http >= 0.10.0)
HttpResponse::send — Send response
Finally send the entity.
A successful caching attempt will exit PHP, and write a log entry if the INI 设定 http.log.cache is set. See the INI 设定 http.force_exit for what "exits" means.
whether to destroy all previously started output handlers and their buffers
如果成功则返回 TRUE，失败则返回 FALSE。
Example #1 A HttpResponse::send() example
<?php
HttpResponse::setCache(true);
HttpResponse::setContentType('application/pdf');
HttpResponse::setContentDisposition("$user.pdf", false);
HttpResponse::setFile('sheet.pdf');
HttpResponse::send();
?>