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wp_pre_kses_block_attributes() WP 5.3.1

Remove non-allowable HTML from parsed block attribute values when filtering in the post context.

No Hooks.


String. Filtered text to run through KSES.


wp_pre_kses_block_attributes( $string, $allowed_html, $allowed_protocols );
$string(string) (required)
Content to be run through KSES.
$allowed_html(array[]|string) (required)
An array of allowed HTML elements and attributes, or a context name such as 'post'.
$allowed_protocols(string[]) (required)
Array of allowed URL protocols.


Since 5.3.1 Introduced.

Code of wp_pre_kses_block_attributes() WP 5.7.2

function wp_pre_kses_block_attributes( $string, $allowed_html, $allowed_protocols ) {
	 * `filter_block_content` is expected to call `wp_kses`. Temporarily remove
	 * the filter to avoid recursion.
	remove_filter( 'pre_kses', 'wp_pre_kses_block_attributes', 10 );
	$string = filter_block_content( $string, $allowed_html, $allowed_protocols );
	add_filter( 'pre_kses', 'wp_pre_kses_block_attributes', 10, 3 );

	return $string;