nocache_headers()
Set the headers to prevent caching for the different browsers.
Description Description
Different browsers support different nocache headers, so several headers must be sent so that all of them get the point that no caching should occur.
See also See also
Source Source
File: wp-includes/functions.php
function nocache_headers() {
$headers = wp_get_nocache_headers();
unset( $headers['Last-Modified'] );
// In PHP 5.3+, make sure we are not sending a Last-Modified header.
if ( function_exists( 'header_remove' ) ) {
@header_remove( 'Last-Modified' );
} else {
// In PHP 5.2, send an empty Last-Modified header, but only as a
// last resort to override a header already sent. #WP23021
foreach ( headers_list() as $header ) {
if ( 0 === stripos( $header, 'Last-Modified' ) ) {
$headers['Last-Modified'] = '';
break;
}
}
}
foreach ( $headers as $name => $field_value ) {
@header( "{$name}: {$field_value}" );
}
}
Expand full source code Collapse full source code View on Trac
Changelog Changelog
| Version | Description |
|---|---|
| 2.0.0 | Introduced. |