wp_check_php_version()
Checks if the user needs to update PHP.
WordPress 5.1.1 Hooks, Functions, Classes and Methods
wp_direct_php_update_button()
Display a button directly linking to a PHP update process.
wp_get_direct_php_update_url()
Gets the URL for directly updating the PHP version the site is running on.
wp_direct_php_update_url
Filters the URL for directly updating the PHP version the site is running on from the host.
wp_is_php_version_acceptable
Filters whether the active PHP version is considered acceptable by WordPress.