Data->get( $name ); if ( MWF_Functions::is_empty( $value ) ) { return; } $defaults = array( 'types' => '', 'message' => __( 'This file is invalid.', 'mw-wp-form' ), ); $options = array_merge( $defaults, $options ); $_types = explode( ',', $options['types'] ); $types = array(); foreach ( $_types as $type ) { $types[] = preg_quote( trim( $type ), '/' ); } $types = implode( '|', MWF_Functions::array_clean( $types ) ); $pattern = '/\.(' . $types . ')$/i'; if ( ! preg_match( $pattern, $value ) ) { return $options['message']; } } /** * Add setting field to validation rule setting panel. * * @param numeric $key ID of validation rule. * @param array $value Content of validation rule. * @return void */ public function admin( $key, $value ) { $types = ''; if ( is_array( $value[ $this->get_name() ] ) && isset( $value[ $this->get_name() ]['types'] ) ) { $types = $value[ $this->get_name() ]['types']; } ?>