我试图在删除某行之前检查它是否存在.我的表中的行不存在,但它总是返回 1:
I am trying to check if a row exists before I delete it. The row in my table doesn't exist but it always returns 1:
$orders = $this->db->prepare("SELECT * FROM orders WHERE id=? AND user=?");
$check = $orders->execute(array($message,$this->model->checkapi($data,$message)));
echo $check;
if($check){
$deleteorder = $this->db->prepare("DELETE FROM orders WHERE id=? AND user=?");
$deleteorder->execute(array($message,$this->model->checkapi($data,$message)));
array_push($result, array('success' => true,
'deleted' => $message));
echo json_encode(array("result" => $result));
die();
}else{
$this->model->checkapi($data,$message)返回 fakeusername 和 id/$message 返回 136
$this->model->checkapi($data,$message)
returns fakeusername and id/$message returns 136
我检查了我的数据库,ID 存在,但 ID 和用户名不存在.
I've checked my database, the ID exists, but not the id and username together.
我正在发送 ID:136 和用户名:fakeuser
I'm sending id: 136 and username: fakeuser
在数据库中,该行以 id:136 和用户名:demo 的形式存在.
in the databse the row exists as id:136 and username: demo.
我不知道为什么当由于不匹配而不应选择该行时它会返回 1.
I'm not sure why it's returning 1 when the row shouldn't be selected due to it not matching.
你应该在 execute() 之后使用 fetch(),因为 execute() 只在成功时返回 TRUE 或在失败时返回 FALSE :
You should use fetch() after execute(), because execute() just returns TRUE on success or FALSE on failure :
$orders->execute(...
$result = $orders->fetch(PDO::FETCH_ASSOC);
print_r($result);
这篇关于PDO 查询总是返回 1 或 true的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持html5模板网!
在 SELECT(MYSQL/PHP) 中加入 2 个表Joining 2 tables in SELECT(MYSQL/PHP)(在 SELECT(MYSQL/PHP) 中加入 2 个表)
如何使<option selected=“selected">由How to make lt;option selected=quot;selectedquot;gt; set by MySQL and PHP?(如何使lt;option selected=“selectedgt;由 MySQL 和 PHP 设置?)
使用 PHP 中的数组自动填充选择框Auto populate a select box using an array in PHP(使用 PHP 中的数组自动填充选择框)
PHP SQL SELECT where like search item with multiple wordsPHP SQL SELECT where like search item with multiple words(PHP SQL SELECT where like search item with multiple words)
json_encode 从 MSSQL-SELECT 产生 JSON_ERROR_UTF8json_encode produce JSON_ERROR_UTF8 from MSSQL-SELECT(json_encode 从 MSSQL-SELECT 产生 JSON_ERROR_UTF8)
MySQL ORDER BY rand(),名称 ASCMySQL ORDER BY rand(), name ASC(MySQL ORDER BY rand(),名称 ASC)