下列常量由此扩展定义,且仅在此扩展编译入 PHP 或在运行时动态载入时可用。
COUNTER_FLAG_PERSIST
(integer) COUNTER_FLAG_SAVE
(integer) COUNTER_FLAG_NO_OVERWRITE
(integer) COUNTER_META_NAME
(string) COUNTER_META_IS_PERISTENT
(string) COUNTER_FLAG_PERSIST
标志) COUNTER_RESET_NEVER
(integer) COUNTER_RESET_PER_LOAD
(integer) COUNTER_RESET_PER_REQUEST
(integer)