PDO提取不返回表中的任何行

Question

为什么我的PDO提取不从表中返回任何行？

$sql = "SELECT * from ts_rounds WHERE current=:current"; 
    $stm = $pdo->prepare($sql); 
    $stm->execute(array(':current' => 1)); 
    $rows = $stm->fetch(); 
    echo $row["name"]; 

Answer 1

把：在一号线=后：

$sql = "SELECT * from ts_rounds WHERE current=:current";