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dba_exists

(PHP 3 >= 3.0.8, PHP 4, PHP 5)

dba_exists -- Check whether key exists

说明

bool dba_exists ( string key, resource handle )

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

dba_delete()
dba_fetch()
dba_insert()
dba_replace()



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dba_delete上一级dba_fetch