Multiple Values

• There are some special methods for dealing with duplicate keys

• This recovers a list of the values associated with the given key:

        @a = $db->get_dup($Key);

• This is a count of the number of appearances of the key:

        $n = $db->get_dup($Key);

• You can checks to see if the key is associated with a certain value

  • If the pair is found, this returns false and positions the cursor at the specified pair

        $failed = $db->find_dup($Key, $Value);

• You can then iterate over preceding or following key-value pairs with ->seq

• You can delete just one key-value pair:

        $failed = $db->del_dup($Key, $Value);

• This returns false on success

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Copyright © 2003 M. J. Dominus