Question

我真的不知道我在做什么，我对php不太了解，但是我的一个朋友寻求帮助，所以我就一直坚持下去，以解决问题。

我有3个查询，我认为它们一直在打其他的bind_param，最后一次使用它们时，各个查询都可以单独工作，但是当我将它们全部使用且未注释和混合时，我会一直遇到此错误致命错误：未捕获错误：在布尔值上调用成员函数bind_param（）

最后一个查询取决于前两个查询。

if(isset($_POST['submit'])){
date_default_timezone_set('Asia/Hong_Kong');
$todaysSerialCode='';

if($conn->connect_error){
    die("Connection Failed: " . $conn->connect_error);
}

/*GETTING LATEST SERIAL CODE LAST VALUE
    -query database
    -if no result is given/null then the assumption is the there are no serialcode created for that date
    -if there are no serial code then append int 01 else then add one to the latest value
*/
$todaysSerialCode = substr($_POST['campus'], 0, 2) . date('y') . date('m') . date('d');
$stmt=$conn->prepare("SELECT MAX( SerialCode ) AS max FROM joborder where SerialCode LIKE ?");
$stmt->bind_param('s',$searchForLatestSerialCode);
echo $searchForLatestSerialCode= $todaysSerialCode . '__';
$stmt->execute();
$stmt->bind_result($latestSerialCode);
if($stmt->fetch()){
// getting the last 2 digits of the serial code and adding 1
 $latestSerialNum = substr($latestSerialCode, 8,10)+1;
 /*
    in adding one for example
    04 + 1 the result would be 4
    so we need to append again a zero below
    so if the length of the value is less than or equal to one 
    we append a zero in front of it
 */

 if(strlen($latestSerialNum)<=1)
    $latestSerialNum = '0'.$latestSerialNum;

//appending the latest number
    echo $todaysSerialCode = $todaysSerialCode . $latestSerialNum;
}else{
    $todaysSerialCode = $todaysSerialCode . '01';
}

$stmt=$conn->prepare("SELECT Id FROM priority where Name = ?");
$stmt->bind_param('s', $priority);
$priority = $_POST["priority"];
//echo $priority;
$stmt->execute();
$stmt->bind_result($priorityId);
$stmt->fetch();




echo  $priorityId;
//now inserting data
$stmt=$conn->prepare("INSERT INTO joborder (AirCondition,
                                           CarpentryMasonry,
                                           ElectricalWorks,
                                           Plumbing,
                                           Welding,
                                           Campus,
                                           priority, 
                                           Requester,
                                           UserJobDescription,
                                           SerialCode
                                           ) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?)" );

$stmt->bind_param('ssssssssss',
                $airConditioning,
                $masonryCarpentry,
                $electrical,
                $plumbing,
                $welding,
                $campus,
                $priority,
                $requester,
                $userJobDescription,
                $serialCode);

echo $airConditioning = isset($_POST['air-conditioning']) ? "checked" : '';
echo $masonryCarpentry = isset($_POST['masonary-carpentry']) ? "checked" : '';
echo $electrical = isset($_POST['Electrical']) ? "checked" : '';
echo $plumbing = isset($_POST['Plumbing']) ? "checked" : ''; 
echo $welding = isset($_POST['Welding']) ? "checked" : '';
echo $campus =  $_POST['campus'];
echo $priority =  $priorityId;
echo $requester = $_SESSION['usr_fullname'];
echo $userJobDescription = $_POST['user-job-description'];
//create serial code
echo $serialCode= $todaysSerialCode;
}

PHP致命错误：未捕获错误：在布尔值上调用成员函数bind_param（）

0 个答案: