dbmexists

(PHP 4)

dbmexists — Tells if a value exists for a key in a DBM database

bool dbmexists ( resource $dbm_identifier , string $key )

Returns TRUE if there is a value associated with the key .

如果成功则返回 TRUE，失败则返回 FALSE。


	PHP5中文手册 dbmdelete dbmfetch DBM PHP Manual dbmexists (PHP 4) dbmexists — Tells if a value exists for a key in a DBM database 说明 bool dbmexists ( resource `$dbm_identifier` , string `$key` ) Returns `TRUE` if there is a value associated with the `key` . 参数 `dbm_identifier` The DBM link identifier, returned by dbmopen(). `key` The key, as a string 返回值如果成功则返回 `TRUE`，失败则返回 `FALSE`。参见 dbmfetch() dbmdelete dbmfetch DBM PHP Manual