wp-includes/class-wp-rewrite.php:1509Refreshes the rewrite rules, saving the fresh value to the database.
private function refresh_rewrite_rules() { $this->rules = ''; $this->matches = 'matches'; $this->rewrite_rules(); if ( ! did_action( 'wp_loaded' ) ) { /* * It is not safe to save the results right now, as the rules may be partial. * Need to give all rules the chance to register. */ add_action( 'wp_loaded', array( $this, 'flush_rules' ) ); } else { update_option( 'rewrite_rules', $this->rules ); } }Introduced in 6.4.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/class-wp-rewrite.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.