wp-includes/user.php:5227Registers the user meta property for persisted preferences.
function wp_register_persisted_preferences_meta() { /* * Create a meta key that incorporates the blog prefix so that each site * on a multisite can have distinct user preferences. */ global $wpdb; $meta_key = $wpdb->get_blog_prefix() . 'persisted_preferences'; register_meta( 'user', $meta_key, array( 'type' => 'object', 'single' => true, 'show_in_rest' => array( 'name' => 'persisted_preferences', 'type' => 'object', 'schema' => array( 'type' => 'object', 'context' => array( 'edit' ), 'properties' => array( '_modified' => array( 'description' => __( 'The date and time the preferences were updated.' ), 'type' => 'string', 'format' => 'date-time', 'readonly' => false, ), ), 'additionalProperties' => true, ), ), ) );}Introduced in 6.1.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/user.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.