Regarding the 20071101 note of "root at mantoru dot de":
That solution got me started but didn't quite work for me. Apache (at least 2.x) applies an algorithm to the Last-Modified time. A solution that worked perfectly for me is at http://us3.php.net/manual/en/function.fileinode.php#78264.
Richard
http_match_etag
(PECL pecl_http >= 0.1.0)
http_match_etag — Match ETag
Description
bool http_match_etag
( string
$etag
[, bool $for_range = false
] )Matches the given ETag against the clients If-Match resp. If-None-Match HTTP headers.
Parameters
-
etag -
the ETag to match
-
for_range -
if set to
TRUE, the header usually used to validate HTTP ranges will be checked
Return Values
Returns TRUE if ETag matches or the header contained the asterisk ("*"), else FALSE.
See Also
- http_match_last_modified()
- http_match_request_header() - Match any header
- http_cache_etag() - Caching by ETag
- http_cache_last_modified() - Caching by last modification
- ob_etaghandler() - ETag output handler
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User Contributed Notes 2 notes
php dot net at eoasys dot com ¶
16 years ago
root at mantoru dot de ¶
17 years ago
An Apache-like ETag can be generated like this:
<?php
function etag($filename, $quote = true) {
if (!file_exists($filename) || !($info = stat($filename))) {
return false;
}
$q = ($quote) ? '"' : '';
return sprintf("$q%x-%x-%x$q", $info['ino'], $info['size'], $info['mtime']);
}
?>
