(PHP 4 >= 4.0.6, PHP 5 <= 5.0.5, PECL dbx >= 1.1.0)
dbx_sort — Sort a result from a dbx_query by a custom sort function
$result
, string $user_compare_function
)Sort a result from a dbx_query() call with a custom sort function.
resultA result set returned by dbx_query().
user_compare_functionThe user-defined comparison function. It must accept two arguments and return an integer less than, equal to, or greater than zero if the first argument is considered to be respectively less than, equal to, or greater than the second.
Restituisce TRUE in caso di successo, FALSE in caso di fallimento.
Example #1 dbx_sort() example
<?php
function user_re_order($a, $b)
{
$rv = dbx_compare($a, $b, "parentid", DBX_CMP_DESC);
if (!$rv) {
$rv = dbx_compare($a, $b, "id", DBX_CMP_NUMBER);
}
return $rv;
}
$link = dbx_connect(DBX_ODBC, "", "db", "username", "password")
or die("Could not connect");
$result = dbx_query($link, "SELECT id, parentid, description FROM tbl ORDER BY id");
// data in $result is now ordered by id
dbx_sort($result, "user_re_order");
// data in $result is now ordered by parentid (descending), then by id
dbx_close($link);
?>
Nota:
It is always better to use ORDER BY SQL clause instead of dbx_sort() if possible.