diff options
Diffstat (limited to 'engine/lib/elgglib.php')
| -rw-r--r-- | engine/lib/elgglib.php | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/engine/lib/elgglib.php b/engine/lib/elgglib.php index 12560308e..7ebf918b7 100644 --- a/engine/lib/elgglib.php +++ b/engine/lib/elgglib.php @@ -1659,6 +1659,30 @@ function css_page_handler($page) { } /** + * Reverses the ordering in an ORDER BY clause. This is achived by replacing + * asc with desc, or appending desc to the end of the clause. + * + * This is used mostly for elgg_get_entities() and other similar functions. + * + * @access private + * @param string $order_by An order by clause + */ +function elgg_sql_reverse_order_by_clause($order_by) { + $order_by = strtolower($order_by); + + if (strpos($order_by, ' asc') !== false) { + $return = str_replace(' asc', ' desc', $order_by); + } elseif (strpos($order_by, ' desc') !== false) { + $return = str_replace(' desc', ' asc', $order_by); + } else { + // no order specified, so default to desc since mysql defaults to asc + $return = $order_by . ' desc'; + } + + return $return; +} + +/** * Intercepts the index page when Walled Garden mode is enabled. * * @link http://docs.elgg.org/Tutorials/WalledGarden |