Question

我在php中的MYSQL语句中绑定了一些参数时遇到了一些问题。在计数（$ posts）＆gt;时抛出错误1在下面的标记线上。谁知道我做错了什么？错误是：在非对象上调用成员函数bind_param（）。它还报告comman不同步？（在下面的标记行上）

<?php 

include '../../main/mainFunctions2.php';

$futurePosts = json_decode($_POST['futurePosts']);

$repeatSerie = null;
if(count($posts) > 1){

    //Get new repeatSeries
    $stmt = $mysqli->prepare("
    SELECT repeatSerie
    FROM timeSpaces_futurePosts
    ORDER BY repeatSerie DESC
    LIMIT 1
    ");
    $stmt->execute();
    $stmt->bind_result($repeatSerie);
    $stmt->fetch();
    $repeatSerie = ((int)$repeatSerie + 1);
}
$timeStamp = time();
foreach($posts as $fp){
    $title = $fp->title;
    $startDate = $fp->startDate;
    $endDate = $fp->endDate;
    $startTime = $fp->startTime;
    $endTime = $fp->endTime;
    $location = $fp->location;
    $latLong = $fp->latLong;
    $info = $fp->info;
    $photoId = $fp->photoId;
    $invited = $fp->invited;
    if($invited != null){
        $invited = 1;
    }else{
        $invited = 0;
    }
    $reminderType = $fp->reminderType;
    $reminderTimeStamp = $fp->reminderTimeStamp;
    $repeatSerie = $repeatSerie;

    $stmt = $mysqli->prepare("
    INSERT INTO futurePosts (profileId, title, startDate, endDate, startTime, endTime, location, latLong, info, photoId, invited, reminderType, reminderTimeStamp, repeatSerie)
    VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)"
    );
    $stmt->bind_param('isssiisssiisii', $profileId, $title, $startDate, $endDate, $startTime, $endTime, $location, $latLong, $info, $photoId, $invited, $reminderType, $reminderTimeStamp, $repeatSerie);
    //The line above: Call to a member function bind_param() on a non-object
    $stmt->execute();
    $futurePostId = $mysqli->insert_id;

    if($invited == 1){
        foreach($fp->invited as $friendsId){
            $friendsId = $friendsId;
            $stmt = $mysqli->prepare('
            INSERT INTO futurePosts_invited (profileId, futurePostId, timeStamp)
            VALUES (?, ?, ?)
            ');
            $stmt->bind_param('iii', $friendsId, $futurePostId, $timeStamp);
            $stmt->execute();
        }
    }
}

echo 'TRUE';


?>

Answer 1

这很可能是因为$stmt = $mysqli->prepare(...);行因SQL语法错误而失败。尝试回显$mysqli->error，看看它有什么问题。

在执行$stmt->store_result();语句之后，在向MySQL发出任何其他查询之前，请尝试调用SELECT。

旁注：您应该在foreach循环之前准备好您的陈述。这将为您带来一些性能提升，因为该语句只会被编译一次，并且每次循环运行时只会将参数发送到服务器。

Answer 2

mysqli_prepare（）返回一个语句对象，如果有错误则返回FALSE 发生。

mysqli :: prepare是不是返回一个对象？

2 个答案: