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http://mosquito.wordpress.org/view.php?id=1323 - Hat tip: Dougal

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git-svn-id: http://svn.automattic.com/wordpress/trunk@2600 1a063a9b-81f0-0310-95a4-ce76da25c4cd
This commit is contained in:
matt 2005-05-13 21:07:21 +00:00
parent 7b58642bbc
commit 3222cf4dfb
1 changed files with 9 additions and 4 deletions
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13
wp-blog-header.php
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@ -128,14 +128,19 @@ if ( !empty($error) && '404' == $error ) {
@header('X-Pingback: ' . get_bloginfo('pingback_url')); @header('X-Pingback: ' . get_bloginfo('pingback_url'));
// Support for Conditional GET // Support for Conditional GET
if (isset($_SERVER['HTTP_IF_MODIFIED_SINCE'])) $client_last_modified = $_SERVER['HTTP_IF_MODIFIED_SINCE'];
else $client_last_modified = false;
if (isset($_SERVER['HTTP_IF_NONE_MATCH'])) $client_etag = stripslashes($_SERVER['HTTP_IF_NONE_MATCH']); if (isset($_SERVER['HTTP_IF_NONE_MATCH'])) $client_etag = stripslashes($_SERVER['HTTP_IF_NONE_MATCH']);
else $client_etag = false; else $client_etag = false;
$client_last_modified = trim( $_SERVER['HTTP_IF_MODIFIED_SINCE']);
// If string is empty, return 0. If not, attempt to parse into a timestamp
$client_modified_timestamp = $client_last_modified ? strtotime($client_last_modified) : 0;
// Make a timestamp for our most recent modification...
$wp_modified_timestamp = strtotime($wp_last_modified);
if ( ($client_last_modified && $client_etag) ? if ( ($client_last_modified && $client_etag) ?
((strtotime($client_last_modified) >= strtotime($wp_last_modified)) && ($client_etag == $wp_etag)) : (($client_modified_timestamp >= $wp_modified_timestamp) && ($client_etag == $wp_etag)) :
((strtotime($client_last_modified) >= strtotime($wp_last_modified)) || ($client_etag == $wp_etag)) ) { (($client_modified_timestamp >= $wp_modified_timestamp) || ($client_etag == $wp_etag)) ) {
if ( preg_match('/cgi/',php_sapi_name()) ) { if ( preg_match('/cgi/',php_sapi_name()) ) {
header('Status: 304 Not Modified'); header('Status: 304 Not Modified');
echo "\r\n\r\n"; echo "\r\n\r\n";