( ! empty( $robots['noimageindex'] ) ) {
$robots['imageindex'] = null;
// `max-image-preview` should set be to `none` when `noimageindex` is present.
// Using `isset` rather than `! empty` here so that in the rare case of `max-image-preview`
// being equal to an empty string due to filtering, its value would still be set to `none`.
if ( isset( $robots['max-image-preview'] ) ) {
$robots['max-image-preview'] = 'none';
}
}
if ( ! empty( $robots['nosnippet'] ) ) {
$robots['snippet'] = null;
}
if ( ! empty( $robots['noindex'] ) ) {
$robots['index'] = null;
$robots['imageindex'] = null;
$robots['noimageindex'] = null;
$robots['archive'] = null;
$robots['noarchive'] = null;
$robots['snippet'] = null;
$robots['nosnippet'] = null;
$robots['max-snippet'] = null;
$robots['max-image-preview'] = null;
$robots['max-video-preview'] = null;
}
return $robots;
}
/**
* Sorts the robots array.
*
* @param array $robots The robots array.
*
* @return array The sorted robots array.
*/
protected function sort_robots( $robots ) {
\uksort(
$robots,
static function ( $a, $b ) {
$order = [
'index' => 0,
'noindex' => 1,
'follow' => 2,
'nofollow' => 3,
];
$ai = ( $order[ $a ] ?? 4 );
$bi = ( $order[ $b ] ?? 4 );
return ( $ai - $bi );
}
);
return $robots;
}
}
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