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(PECL ev >= 0.2.0)
EvPeriodic::set — Configures the watcher
$offset
, double $interval
)(Re-)Configures EvPeriodic watcher
offset
The same meaning as for EvPeriodic::__construct() . See Periodic watcher operation modes
interval
The same meaning as for EvPeriodic::__construct() . See Periodic watcher operation modes
没有返回值。