102 Processing

TRF Docs
HTTP Documentation
HTTP Status Codes
102

Overview
Deprecated:
This HTTP Status code should not be used on new projects.

The HTTP Status Code 102 Processing indicates that the server is currently processing the request, but has not finished yet. This prevents the clients from timing-out, as some requests may need a lot of time to successfully finish processing the request. This status code is part of the WebDAV protocol extension, see RFC 2518 (IETF).

php
header("HTTP/1.1 102 Processing");

This will send the HTTP Status code 102 to the client.

See also

HTTP Status Codes