http_send_last_modified

(PECL pecl_http >= 0.1.0)

http_send_last_modified — Send Last-Modified

bool http_send_last_modified ([ int $timestamp ] )

Send a Last-Modified header with a valid HTTP date.

Note: This function should be used in conjunction with http_send_data(), http_send_file() 和 http_send_stream().

timestamp: a Unix timestamp, converted to a valid HTTP date; if omitted, the current time will be sent

如果成功则返回 TRUE，失败则返回 FALSE。