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    apcu_cas

    (PECL apcu >= 4.0.0)

    apcu_cas — Updates an old value with a new value

    Açıklama

    apcu_cas(string $key, int $old, int $new): bool

    apcu_cas() updates an already existing integer value if the old parameter matches the currently stored value with the value of the new parameter.

    Bağımsız Değişkenler

    key
    The key of the value being updated.
    old
    The old value (the value currently stored).
    new
    The new value to update to.

    Dönen Değerler

    Başarı durumunda true, başarısızlık durumunda false döner.

    Örnekler

    Örnek 1 apcu_cas() example

    <?php
    apcu_store    ('foobar', 2);
    echo     '$foobar = 2', PHP_EOL;
    echo     '$foobar == 1 ? 2 : 1 = ', (apcu_cas('foobar', 1, 2) ? 'ok' : 'fail'), PHP_EOL;
    echo     '$foobar == 2 ? 1 : 2 = ', (apcu_cas('foobar', 2, 1) ? 'ok' : 'fail'), PHP_EOL;

    echo     '$foobar = ', apcu_fetch('foobar'), PHP_EOL;

    echo     '$f__bar == 1 ? 2 : 1 = ', (apcu_cas('f__bar', 1, 2) ? 'ok' : 'fail'), PHP_EOL;

    apcu_store('perfection', 'xyz');
    echo     '$perfection == 2 ? 1 : 2 = ', (apcu_cas('perfection', 2, 1) ? 'ok' : 'epic fail'), PHP_EOL;

    echo     '$foobar = ', apcu_fetch('foobar'), PHP_EOL;
    ?>

    Yukarıdaki örnek şuna benzer bir çıktı üretir:

    $foobar = 2
$foobar == 1 ? 2 : 1 = fail
$foobar == 2 ? 1 : 2 = ok
$foobar = 1
$f__bar == 1 ? 2 : 1 = fail
$perfection == 2 ? 1 : 2 = epic fail
$foobar = 1

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