hash ) ) { return $this->hash; } $this->hash = $prefix . md5( $this->sql() ); return $this->hash; } /** * @param string $prefix * * @return false|mixed */ public function get_cached( $prefix = '' ) { return wp_cache_get( $this->get_hash( $prefix ), self::CACHE_GROUP ); } public function query_all(): array { $cached = $this->get_cached( 'query_all_' ); if ( false !== $cached ) { return $cached; } $results = parent::query_all(); wp_cache_set( $this->get_hash(), $results, self::CACHE_GROUP ); return $results; } public function query_one(): array { $cached = $this->get_cached( 'query_one_' ); if ( false !== $cached ) { return $cached; } $results = parent::query_one(); wp_cache_set( $this->get_hash(), $results, self::CACHE_GROUP ); return $results; } public function query_var( $column_offset = 0, $row_offset = 0 ) { $cached = $this->get_cached( "query_var_{$column_offset}_{$row_offset}_" ); if ( false !== $cached ) { return $cached; } $results = parent::query_var(); wp_cache_set( $this->get_hash(), $results, self::CACHE_GROUP ); return $results; } public function query_col( $index = 0 ) { $cached = $this->get_cached( "query_col_{$index}_" ); if ( false !== $cached ) { return $cached; } $results = parent::query_col( $index ); wp_cache_set( $this->get_hash(), $results, self::CACHE_GROUP ); return $results; } }