Php/docs/function.dba-exists

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dba_exists

(PHP 4, PHP 5, PHP 7)

dba_existsCheck whether key exists


说明

dba_exists ( string $key , resource $handle ) : bool

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


参数

key
The key the check is performed for.
handle
The database handler, returned by dba_open() or dba_popen().


返回值

Returns true if the key exists, false otherwise.


参见