HTTP 函数
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http_match_etag

(PECL pecl_http >= 0.1.0)

http_match_etag — Match ETag

说明

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.

参数

etag

the ETag to match

for_range

if set to TRUE, the header usually used to validate HTTP ranges will be checked

返回值

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

参见

HTTP 函数
在线手册：中文 英文
PHP手册
PHP手册 - N: Match ETag

用户评论:

php dot net at eoasys dot com (05-Apr-2008 07:16)

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 01:46)

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']);
}
?>