LLMS_Cache_Helper::additional_nocache_headers( array $headers )
Set additional nocache headers.
Description Description
See also See also
Parameters Parameters
- $headers
-
(array) (Required) Header names and field values.
- 'Expires'
(string) Expires header. - 'Cache-Control'
(string) Cache-Control header.
- 'Expires'
Return Return
(array)
Source Source
File: includes/class.llms.cache.helper.php
public static function additional_nocache_headers( $headers ) {
// First tree are the default ones.
$nocache_headers_cache_control = array(
'no-cache',
'must-revalidate',
'max-age=0',
'no-store',
);
if ( ! empty( $headers['Cache-Control'] ) ) {
$original_headers_cache_control = array_map( 'trim', explode( ',', $headers['Cache-Control'] ) );
// Merge original headers with our nocache headers.
$nocache_headers_cache_control = array_merge( $nocache_headers_cache_control, $original_headers_cache_control );
// Avoid duplicates.
$nocache_headers_cache_control = array_unique( $nocache_headers_cache_control );
}
$headers['Cache-Control'] = implode( ', ', $nocache_headers_cache_control );
return $headers;
}
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Changelog Changelog
| Version | Description |
|---|---|
| 6.4.0 | Introduced. |