By default, this is disabled; _ttl = "60" specifies that when eAccelerator runs out of shared memory, any script that hasn't been accessed in 60 seconds should be purged.
默認情況下,這是被禁用的;_ttl = "60"指定:當eAccelerator 用完共享內存時,60秒內未被訪問的所有腳本都將被清除。