dbmfirstkey

(PHP 4)

dbmfirstkey — Retrieves the first key from a DBM database

说明

string dbmfirstkey ( resource $dbm_identifier )

Returns the first key in the database. Note that no particular order is guaranteed since the database may be built using a hash-table, which doesn't guarantee any ordering.

参数

dbm_identifier: The DBM link identifier, returned by dbmopen().

返回值

如果成功则返回 TRUE，失败则返回 FALSE。

参见

dbmnextkey()


	PHP5中文手册 dbmfetch dbminsert DBM PHP Manual dbmfirstkey (PHP 4) dbmfirstkey — Retrieves the first key from a DBM database 说明 string dbmfirstkey ( resource `$dbm_identifier` ) Returns the first key in the database. Note that no particular order is guaranteed since the database may be built using a hash-table, which doesn't guarantee any ordering. 参数 `dbm_identifier` The DBM link identifier, returned by dbmopen(). 返回值如果成功则返回 `TRUE`，失败则返回 `FALSE`。参见 dbmnextkey() dbmfetch dbminsert DBM PHP Manual