wp-admin/includes/upgrade.php:2497Executes changes made in WordPress 7.0.
function upgrade_700() { global $wp_current_db_version, $wpdb; // Migrate users with 'fresh' admin color to 'modern'. if ( $wp_current_db_version < 61644 ) { $wpdb->update( $wpdb->usermeta, array( 'meta_value' => 'modern' ), array( 'meta_key' => 'admin_color', 'meta_value' => 'fresh', ) ); }}Introduced in 7.0.0. Unchanged from 7.0.4 through 7.1.0.
Signature, return type and hooks compared across 2 parsed releases.
src/wp-admin/includes/upgrade.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.