wp-admin/includes/class-wp-site-health-auto-updates.php:283Checks if we can access files without providing credentials.
array public function test_check_wp_filesystem_method() { // Make sure the `request_filesystem_credentials()` function is available during our REST API call. if ( ! function_exists( 'request_filesystem_credentials' ) ) { require_once ABSPATH . 'wp-admin/includes/file.php'; } $skin = new Automatic_Upgrader_Skin(); $success = $skin->request_filesystem_credentials( false, ABSPATH ); if ( ! $success ) { $description = __( 'Your installation of WordPress prompts for FTP credentials to perform updates.' ); $description .= ' ' . __( '(Your site is performing updates over FTP due to file ownership. Talk to your hosting company.)' ); return array( 'description' => $description, 'severity' => 'fail', ); } return array( 'description' => __( 'Your installation of WordPress does not require FTP credentials to perform updates.' ), 'severity' => 'pass', ); }Introduced in 5.2.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-admin/includes/class-wp-site-health-auto-updates.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.