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  • wincache_ucache_cas()

    (PECL wincache >= 1.1.0)

    Compares the variable with old value and assigns new value to it

    说明

    wincache_ucache_cas(string $key,int $old_value,int $new_value): bool

    Compares the variable associated with the$keywith$old_valueand if it matches then assigns the$new_valueto it.

    参数

    $key

    The$keythat is used to store the variable in the cache.$keyis case sensitive.

    $old_value

    Old value of the variable pointed by$keyin the user cache. The value should be of typelong, otherwise the function returns FALSE.

    $new_value

    New value which will get assigned to variable pointer by$keyif a match is found. The value should be of typelong, otherwise the function returns FALSE.

    返回值

    成功时返回TRUE,或者在失败时返回FALSE

    范例

    Example #1 Using wincache_ucache_cas()

    <?php
    wincache_ucache_set('counter', 2922);
    var_dump(wincache_ucache_cas('counter', 2922, 1));
    var_dump(wincache_ucache_get('counter'));
    ?>
    

    以上例程会输出:

    bool(true) 
    int(1)
    

    参见