For reasons outside my control I am unable to set display_errors=0 and log_errors=1 in php.ini on my production server. I know I can set error_reporting(0); to
error_reporting(0);
Both are PHP_INI_ALL, so you can just use ini_set at runtime.
ini_set('display_errors', 0); ini_set('log_errors', 1);
See http://php.net/manual/en/ini.list.php