wp_get_direct_php_update_url

WordPress Version: 1.1

/**
 * Gets the URL for directly updating the PHP version the site is running on.
 *
 * A URL will only be returned if the `WP_DIRECT_UPDATE_PHP_URL` environment variable is specified or
 * by using the {@see 'wp_direct_php_update_url'} filter. This allows hosts to send users directly to
 * the page where they can update PHP to a newer version.
 *
 * @since 5.1.1
 *
 * @return string URL for directly updating PHP or empty string.
 */
function wp_get_direct_php_update_url()
{
    $direct_update_url = '';
    if (false !== getenv('WP_DIRECT_UPDATE_PHP_URL')) {
        $direct_update_url = getenv('WP_DIRECT_UPDATE_PHP_URL');
    }
    /**
     * Filters the URL for directly updating the PHP version the site is running on from the host.
     *
     * @since 5.1.1
     *
     * @param string $direct_update_url URL for directly updating PHP.
     */
    $direct_update_url = apply_filters('wp_direct_php_update_url', $direct_update_url);
    return $direct_update_url;
}