假设我有2个pdo语句,只是顺序不同(asc与desc)
$stmt1 = $po->prepare("SELECT * FROM tabname WHERE categ=:categ ORDER BY field1 DESC");
$stmt2 = $po->prepare("SELECT * FROM tabname WHERE categ=:categ ORDER BY field1 ASC");
有没有办法可以动态绑定ASC / DESC,所以我只能有1 stmt
$order = "ASC"; //or "DESC"
$stmt = $po->prepare("SELECT * FROM tabname WHERE categ=:categ ORDER BY field1 order=:order");
$stmt->bindParam(':order', $order, PDO::ParaM_STR);
解决方法: