dba_exists
(PHP 4, PHP 5, PHP 7, PHP 8)
dba_exists — Check whether key exists
說明
dba_exists(string|array
$key, resource $dba): bool
dba_exists() checks whether the specified
key exists in the database.
參數
-
key -
The key the check is performed for.
-
dba -
The database handler, returned by dba_open() or dba_popen().
返回值
Returns true if the key exists, false otherwise.
參見
- dba_delete() - Delete DBA entry specified by key
- dba_fetch() - Fetch data specified by key
- dba_insert() - Insert entry
- dba_replace() - Replace or insert entry