dba_firstkey

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

    dba_firstkey — Fetch first key

    说明

    dba_firstkey(resource $dba): string|false

    dba_firstkey() returns the first key of the database and resets the internal key pointer. This permits a linear search through the whole database.

    参数

    dba

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

    返回值

    Returns the key on success 或者在失败时返回 false.

    参见

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