(PECL pecl_http >= 0.1.0)
http_send_file — Send file
Sends a file with support for (multiple) range requests.
This functions behaviour and further action is dependent on the following INI 设置s: http.send.not_found_404 和 http.log.not_found.
If the INI 设置 http.send.not_found_404 is enabled and the INI 设置 http.log.not_found points to a writable file, a log message is written when the file was not found.
the file to send
成功时返回 TRUE， 或者在失败时返回 FALSE.
Example #1 A http_send_file() example
<?php
http_send_content_disposition("document.pdf", true);
http_send_content_type("application/pdf");
http_throttle(0.1, 2048);
http_send_file("../report.pdf");
?>
以上例程会输出：
HTTP/1.1 206 Partial Content X-Powered-By: PHP/5.2.2 Accept-Ranges: bytes Content-Length: 12345 Content-Range: bytes 0-12344 Content-Type: application/pdf Content-Disposition: inline; filename="document.pdf" %PDF...