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wp_start_cross_origin_isolation_output_buffer › WordPress Function

Since7.1.0
Deprecatedn/a
› wp_start_cross_origin_isolation_output_buffer ( No parameters )
Defined at:
Codex:

Sends the Document-Isolation-Policy header for cross-origin isolation.

Uses an output buffer to add crossorigin="anonymous" where needed.


Related Functions: wp_set_up_cross_origin_isolation, wp_strict_cross_origin_referrer, wp_add_crossorigin_attributes, wp_start_template_enhancement_output_buffer, wp_get_translation_updates

Source 

function wp_start_cross_origin_isolation_output_buffer(): void {
	$chromium_version = wp_get_chromium_major_version();

	if ( null === $chromium_version || $chromium_version < 137 ) {
		return;
	}

	ob_start(
		static function ( string $output ): string {
			header( 'Document-Isolation-Policy: isolate-and-credentialless' );

			return wp_add_crossorigin_attributes( $output );
		}
	);
}