SyncSemaphore::lock

    (PECL sync >= 1.0.0)

    SyncSemaphore::lock — Decreases the count of the semaphore or waits

    説明

    publicSyncSemaphore::lock(int$wait = -1): bool

    Decreases the count of a SyncSemaphore object or waits until the semaphore becomes non-zero.

    パラメータ

    wait

    The number of milliseconds to wait for the semaphore. A value of -1 is infinite.

    戻り値

    成功した場合に true を、失敗した場合に false を返します。

    例

    例1 SyncSemaphore::lock() example

    <?php
    $semaphore     = new SyncSemaphore("LimitedResource_2clients", 2);

    if (!    $semaphore->lock(3000))
    {
    echo     "Unable to lock semaphore.";

    exit();
    }



    $semaphore->unlock();
    ?>

    参考

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