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http_match_etag

(PECL pecl_http >= 0.1.0)

http_match_etagComprobar si coincide el ETag

Descripción

bool http_match_etag ( string $etag [, bool $for_range = false ] )

Comprueba si coincide el ETag pasado como parámetro con las cabeceras HTTP del cliente If-Match If-None-Match.

Parámetros

etag

ETag a comprobar

for_range

si es TRUE, se comprobará la cabecera normalmente usada para validar rangos HTTP

Valores devueltos

Devuelve TRUE si coincide el ETag o la cabecera contiene un asterisco ("*"), si no FALSE.

Ver también

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User Contributed Notes 2 notes

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1
php dot net at eoasys dot com
16 years ago
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
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1
root at mantoru dot de
16 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']);
}
?>
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