dba_exists

    (PHP 4, PHP 5, PHP 7, PHP 8)

    dba_exists — Check whether key exists

    说明

    dba_exists(string|array $key, resource $dba): bool

    dba_exists() checks whether the specified key exists in the database.

    参数

    key

    The key the check is performed for.

    dba

    The database handler, returned by dba_open() or dba_popen().

    返回值

    Returns true if the key exists, false otherwise.

    参见

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