@@ -205,7 +205,7 @@ |
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205 | 205 | * |
206 | 206 | * @param bool $force If set to true then all cached values will be delete instead of only expired |
207 | 207 | * |
208 | - * @return bool |
|
208 | + * @return false|null |
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209 | 209 | */ |
210 | 210 | public static function delete_all_expired( $force = false ) { |
211 | 211 | global $wpdb; |