试图PDO
在php上使用类,但是我找到正确的方法来处理错误,我写了下面的代码:
<?php
// $connection alreay created on a class which works with similar UPDATE statements
// I've simply added here trim() and PDO::PARAM... data type
$id = 33;
$name = "Mario Bros.";
$url = "http://nintendo.com";
$country = "jp";
try {
$sql = "UPDATE table_users SET name = :name, url = :url, country = :country WHERE user_id = :user_id";
$statement = $connection->prepare ($sql);
$statement->bindParam (':user_id', trim($id), PDO::PARAM_INT);
$statement->bindParam (':name', trim($name), PDO::PARAM_STR);
$statement->bindParam (':url', trim($url), PDO::PARAM_STR);
$statement->bindParam (':country', trim($country), PDO::PARAM_STR, 2);
$status = $statement->execute ();
} catch (PDOException $e) {
print $e->getMessage ();
}
print $status; // it returns a null value, and no errors are reported
?>
这部分代码不会报告错误,但它不起作用,$status
底部的var 返回null值。
有人能帮我找到我错在哪里吗?