apply_filters( ‘widget_block_dynamic_classname’, string $classname, string $block_name )

The classname used in the block widget’s container HTML.

Description

This can be set according to the name of the block contained by the block widget.

$classnamestring: The classname to be used in the block widget’s container HTML, e.g. ‘widget_block widget_text’.
$block_namestring: The name of the block contained by the block widget, e.g. 'core/paragraph'.

return apply_filters( 'widget_block_dynamic_classname', $classname, $block_name );

Used by	Description
WP_Widget_Block::get_dynamic_classname()`wp-includes/widgets/class-wp-widget-block.php`	Calculates the classname to use in the block widget’s container HTML.

Version	Description
5.8.0	Introduced.

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