WP_Rewrite::set_category_base( string $category_base )

Source

File: wp-includes/class-wp-rewrite.php

public function set_category_base( $category_base ) {
		if ( get_option( 'category_base' ) !== $category_base ) {
			update_option( 'category_base', $category_base );
			$this->init();
		}
	}