wp-includes/widgets/class-wp-widget-media.php:338Outputs the settings update form.
$instancearray final public function form( $instance ) { $instance_schema = $this->get_instance_schema(); $instance = wp_array_slice_assoc( wp_parse_args( (array) $instance, wp_list_pluck( $instance_schema, 'default' ) ), array_keys( $instance_schema ) ); foreach ( $instance as $name => $value ) : ?> <input type="hidden" data-property="<?php echo esc_attr( $name ); ?>" class="media-widget-instance-property" name="<?php echo esc_attr( $this->get_field_name( $name ) ); ?>" id="<?php echo esc_attr( $this->get_field_id( $name ) ); // Needed specifically by wpWidgets.appendTitle(). ?>" value="<?php echo esc_attr( is_array( $value ) ? implode( ',', $value ) : (string) $value ); ?>" /> <?php endforeach; }Introduced in 4.8.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/widgets/class-wp-widget-media.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.