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CollectionModify::sort — Set the sorting criteria
$sort_expr
) : mysql_xdevapi\CollectionModifySort the result set by the field selected in the sort_expr argument. The allowed orders are ASC (Ascending) or DESC (Descending). This operation is equivalent to the 'ORDER BY' SQL operation and it follows the same set of rules.
本函数还未编写文档，仅有参数列表。
sort_exprOne or more sorting expression can be provided, the evaluation of these will be from the leftmost to the rightmost, each expression must be separated by a comma.
CollectionModify object that can be used for further processing.
Example #1 mysql_xdevapi\CollectionModify::sort() example
<?php
$res = $coll->modify('true')->sort('name desc', 'age asc')->limit(4)->set('Married', 'NO')->execute();
?>