PHP PDO Select查询未从数据库中选择行

Question

我正在运行此PDO查询：

$stmt = $pdo_conn->prepare("SELECT * from billing_control where sequence = :sequence ");
$stmt->execute(array(':sequence' => $_GET["sequence"]));
$result = $stmt->fetch();

从数据库中选择行，但是当我做var_dump（$ smtm）;时 我得到这个结果：

object(PDOStatement)#2 (1) { ["queryString"]=> string(57) "SELECT * from billing_control where sequence = :sequence " }

我的URL末尾有?sequence=178 ，因此它应该运行SQL：

select * from billing_control where sequence = 178

任何想法我错了吗？

Answer 1

尝试：

$stmt = $pdo_conn->prepare("SELECT * from billing_control where sequence = :sequence ");
$stmt->bindParam(':sequence', $_GET["sequence"])
$stmt->execute();

另一个版本是：

$stmt = $pdo_conn->prepare("SELECT * from billing_control where sequence = ? ");
$stmt->execute(array("%$_GET[sequence]%"));

Answer 2

尝试这个

$query = $pdo_conn->prepare("SELECT * from billing_control where sequence = :sequence ");
$query->bindParam(':sequence', $_GET["sequence"], PDO::PARAM_STR, 255); //I assume that sequence data is string
$result = $query->execute();