Note that the memory is lost after doing this. If you had a key 'foo' with a value of 1000 bytes, that 1000 bytes is lost, and the DB file size will reflect this.
(PHP 4, PHP 5)
dba_delete — Delete DBA entry specified by key
bool dba_delete ( string
dba_delete() deletes the specified entry from the database.
TRUE on success or
FALSE on failure.
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