WP_HTML_Processor::get_namespace() │ public │ WP 1.0

Indicates the namespace of the current token, or "html" if there is none.

Method of the class: WP_HTML_Processor{}

No Hooks.

Return

String. One of "html", "math", or "svg".

Usage

$WP_HTML_Processor = new WP_HTML_Processor();
$WP_HTML_Processor->get_namespace(): string;

WP_HTML_Processor::get_namespace() code WP 6.7.1

wp-includes/html-api/class-wp-html-processor.php 
public function get_namespace(): string {
	if ( ! isset( $this->current_element ) ) {
		return parent::get_namespace();
	}

	return $this->current_element->token->namespace;
}