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dba_firstkey

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

dba_firstkey — Fetch first key

說(shuō)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.

參數

dba

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

返回值

Returns the key on success 或者在失敗時(shí)返回 false.

參見(jiàn)

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