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<SyncSemaphore::unlockSyncEvent::__construct>
^SyncLast updated: Mon, 26 Oct 2026

The SyncEvent class

(PECL sync >= 1.0.0)

Introduction

A cross-platform, native implementation of named and unnamed event objects. Both automatic and manual event objects are supported.

An event object waits, without polling, for the object to be fired/set. One instance waits on the event object while another instance fires/sets the event. Event objects are useful wherever a long-running process would otherwise poll a resource (e.g. checking to see if uploaded data needs to be processed).

Class synopsis

class SyncEvent {
/* Methods */
public function __construct(string $name = ?, bool $manual = false, bool $prefire = false)
public function fire(): bool
public function reset(): bool
public function wait(int $wait = -1): bool
}

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<SyncSemaphore::unlockSyncEvent::__construct>
^SyncLast updated: Mon, 26 Oct 2026