http://mosquito.wordpress.org/view.php?id=1323 - Hat tip: Dougal
git-svn-id: http://svn.automattic.com/wordpress/trunk@2600 1a063a9b-81f0-0310-95a4-ce76da25c4cd
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@ -128,14 +128,19 @@ if ( !empty($error) && '404' == $error ) {
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@header('X-Pingback: ' . get_bloginfo('pingback_url'));
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// Support for Conditional GET
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if (isset($_SERVER['HTTP_IF_MODIFIED_SINCE'])) $client_last_modified = $_SERVER['HTTP_IF_MODIFIED_SINCE'];
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else $client_last_modified = false;
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if (isset($_SERVER['HTTP_IF_NONE_MATCH'])) $client_etag = stripslashes($_SERVER['HTTP_IF_NONE_MATCH']);
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else $client_etag = false;
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$client_last_modified = trim( $_SERVER['HTTP_IF_MODIFIED_SINCE']);
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// If string is empty, return 0. If not, attempt to parse into a timestamp
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$client_modified_timestamp = $client_last_modified ? strtotime($client_last_modified) : 0;
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// Make a timestamp for our most recent modification...
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$wp_modified_timestamp = strtotime($wp_last_modified);
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if ( ($client_last_modified && $client_etag) ?
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((strtotime($client_last_modified) >= strtotime($wp_last_modified)) && ($client_etag == $wp_etag)) :
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((strtotime($client_last_modified) >= strtotime($wp_last_modified)) || ($client_etag == $wp_etag)) ) {
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(($client_modified_timestamp >= $wp_modified_timestamp) && ($client_etag == $wp_etag)) :
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(($client_modified_timestamp >= $wp_modified_timestamp) || ($client_etag == $wp_etag)) ) {
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if ( preg_match('/cgi/',php_sapi_name()) ) {
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header('Status: 304 Not Modified');
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echo "\r\n\r\n";
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