PDO:bindParam令牌语法问题 - PDO: bindParam token syntax issue

PDO: bindParam token syntax issue

本文关键字：语法问题令牌 bindParam PDO | 更新日期: 2024-05-10

这个错误有解决方案吗？发生这种情况是因为查询中的mySQL时间格式吗？

SQL错误错误：SQLSTATE[HY093]：无效的参数编号：绑定变量的数量与令牌数量不匹配大堆([：service_user_id]=>90[：week_beginning]=>2012-08-06[：week_ending]=>2012-08-12)回溯：C:''wamp''www''Sitetest_9.6.12''public_html''main''ajax''timetable_grid_load.php，第45行

这是使用PHP的PHP pdo包装类：

$bind = array(
    ":service_user_id" =>  $service_user_id,
    ":week_beginning" => $week_beginning,
    ":week_ending" => $week_ending,
);

$query = "SELECT 
    id AS sessID,
    session_day as sessDay,
    session_type_id,
    provider_id,
    description,
    TIME_FORMAT(start_time, '%H:%i') as start_time,
    TIME_FORMAT(finish_time, '%H:%i') as finish_time,
    start_date,
    finish_date,
    (SELECT absence FROM attendance WHERE sessID = session_id AND absence_date = DATE_ADD(':week_beginning', INTERVAL sessDay-1 DAY)) AS attendance
    FROM
    sessions
    WHERE
    service_user_id = :service_user_id AND
    start_date <= ':week_ending' AND
    (finish_date >= ':week_beginning' OR
    finish_date IS NULL OR 
    finish_date=0)
    ORDER BY session_day ASC";      
$result= $db->run($query,$bind);
return $result;

不要在准备好的语句中使用单引号分隔参数。这是没有必要的（这就是首先准备好陈述的全部意义）。

    ...
WHERE
    service_user_id = :service_user_id AND
    start_date <= :week_ending AND
    (finish_date >= :week_beginning OR
    finish_date IS NULL OR 
    ...

提示：start_date <= ':week_ending'翻译为less than or equal to the literal string ":week_ending"。