--TEST-- Persistent case insensitive and user defined constants --FILE-- <?php var_dump(ZEND_THREAD_safe); define("ZEND_THREAD_safe", 123); var_dump(ZEND_THREAD_safe); ?> --EXPECTF-- Notice: Use of undefined constant ZEND_THREAD_safe - assumed 'ZEND_THREAD_safe' in %s on line %d string(16) "ZEND_THREAD_safe" int(123)