How to fetch columns in reverse order with PHPCassa
Question
How to fetch the columns in a single row in reverse order with PHPCassa?
Solution 2
Trick is done with empty column slice object.
...
$cf = new ColumnFamily($pool, 'mycolumnfamily');
// normal order
$rows = $cf->get('mykey');
print_r($rows);
// reverse order, 5 is column count, true is reverse order
$rows = $cf->get('mykey', new ColumnSlice(null, null, 5, true) );
print_r($rows);
OTHER TIPS
From phpcassa documentation
public function get($key,
$columns=null,
$column_start="",
$column_finish="",
$column_reversed=False,
$column_count=self::DEFAULT_COLUMN_COUNT,
$super_column=null,
$read_consistency_level=null)
See "@param bool $column_reversed
fetch the columns in reverse order"
Setting this parameter to "true" will fetch the columns in reverse order.
You can even set this parameter for multiget, get_range and get_indexed_slices queries.
For More Detail see: phpcassa columnfamily documentation
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