DBA example in php

<?php

$id = dba_open("/tmp/test.db", "n", "db2");

if (!$id) {
echo "dba_open failed\n";
exit;
}

dba_replace("key", "This is an example!", $id);

if (dba_exists("key", $id)) {
echo dba_fetch("key", $id);
dba_delete("key", $id);
}

dba_close($id);
?>
DBA is binary safe and does not have any arbitrary limits. However, it inherits all limits set by the underlying database implementation.

All file-based databases must provide a way of setting the file mode of a new created database, if that is possible at all. The file mode is commonly passed as the fourth argument to dba_open() or dba_popen().

You can access all entries of a database in a linear way by using the dba_firstkey() and dba_nextkey() functions. You may not change the database while traversing it.