wp-admin/includes/dashboard.php:1958Adds an additional class to the PHP nag if the current version is insecure.
$classesstring[]string[]function dashboard_php_nag_class( $classes ) { $response = wp_check_php_version(); if ( ! $response ) { return $classes; } if ( isset( $response['is_secure'] ) && ! $response['is_secure'] ) { $classes[] = 'php-no-security-updates'; } elseif ( $response['is_lower_than_future_minimum'] ) { $classes[] = 'php-version-lower-than-future-minimum'; } return $classes;}Introduced in 5.1.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-admin/includes/dashboard.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.