http_match_etag

(PECL pecl_http >= 0.1.0)

http_match_etag — Match ETag

Descrição

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.

Parâmetros

etag: the ETag to match
for_range: if set to TRUE, the header usually used to validate HTTP ranges will be checked

Valor Retornado

Returns TRUE if ETag matches or the header contained the asterisk ("*"), else FALSE.

Veja Também

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

add a note User Contributed Notes http_match_etag

php dot net at eoasys dot com 04-Apr-2008 11:16


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

root at mantoru dot de 01-Nov-2007 05:46


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']);

}

?>

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