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This document uses PHP Chinese website manual Release
(PECL event >= 1.2.6-beta)
EventDnsBase::countNameservers — Gets the number of configured nameservers
Gets the number of configured nameservers
此函数没有参数。
Returns the number of configured nameservers(not necessarily the number of running nameservers). This is useful for double-checking whether our calls to the various nameserver configuration functions have been successful.