wxr_cdata()

wxr_cdata( string|null $str ): string

function wxr_cdata( $str ) {
	$str = (string) $str;

	if ( ! wp_is_valid_utf8( $str ) ) {
		$str = utf8_encode( $str );
	}
	// $str = ent2ncr(esc_html($str));
	$str = '<![CDATA[' . str_replace( ']]>', ']]]]><![CDATA[>', $str ) . ']]>';

	return $str;
}