Matches the given ETag against the clients If-Match resp. If-None-Match HTTP headers.
etagthe ETag to match
for_rangeif set to TRUE, the header usually used to validate HTTP ranges will be checked
| http_match_last_modified() |
| http_match_request_header() |
| http_cache_etag() |
| http_cache_last_modified() |
| ob_etaghandler() |