Question

我只是想通过要求另一个带有连接功能的文件来连接我的数据库。我尝试了很多方法，但我总是得到一个空白页面或我的消息“执行失败”。希望有人指出我哪里出错了。感谢。

config.php

define('DB_HOST','host');   //DATABASE HOST
define('DB_USERNAME','username');   //DATABASE USERNAME
define('DB_PASSWORD','password');   //DATABSE PASSWORD
define('DB_NAME','name');   //DATABASE NAME

function connectDB(){
    $mysqli = new mysqli(DB_HOST, DB_USER, DB_PASSWORD, DB_NAME);
    if(!$mysqli){
    trigger_error ('Avon Maitland Schools Canada could not establish a connection to the database at this time. Please try again later or contact info@yourschoolsincanada.com to inquire about this issue.'.mysqli_connect_error());
}else{
    return $mysqli;
    }
}

然后我的注册文件

register.php

require_once('includes/config.php');
$db_connection = connectDB();

if(isset($_POST['register'])){
    /*ALL MY POSTING OF VARIABLE AND VALIDATION IS HERE BUT NOT THE ISSUE*/

    $sql = ("INSERT INTO members (username, email, password_1) VALUES (?,?,?)");
    //Prepare our query
    $stmt = $db_connection->prepare($sql) or die("Failed Execution");

    //Can not proceed if we can not prepare the query
    if(false===$stmt){
        die('prepare() failed: ' . htmlspecialchars($db_connection->error));
}   
    //Bind the fields and there paramters to our query in our testing variable $next_step
    $next_step = $stmt->bind_param('sss', $username, $email, $db_pass);

    //If next_step is false then it didn't work and there is no sense of proceeding
    if($false===$next_step){
        die('bind_param() failed: ' . htmlspecialchars($db_connection->error));
}   

    //Place the Execute into a variable and test if it executed or not
    $next_step = $stmt->execute();
    //If next_step is false then it didn't work and there is no sense of proceeding 
    if(false===$next_step){
        die('execute() failed: ' . htmlspecialchars($db_connection->error));    
    }
    header('Location: redirect somewhere');
    exit();

    //Close the STMT Connection         
    $stmt->close(); 
}

我已经尝试将$ mysqli变量传递给函数但这不起作用。并尝试将Defines添加到函数中，并将它们传递给变量本身也没有运气。如果我没有得到一个空白页面它只是在准备就绪并且说“执行失败”。我很难过。

Answer 1

使用以下代码替换die("Failed Execution"); ..

$stmt = $db_connection->prepare($sql) or die($db_connection->error); //<-- Assuming $db_connection is a valid MYSQLi connection..

如果您提供自己的自定义错误消息，则很难找到错误。

Answer 2

好的我明白了，我正在通过wordpress子主题构建这个应用程序。问题是我定义的大多数变量都与wp-config.php中的变量名称相同，所以它总是用错误的凭据等查找错误的地方。改变那些，它工作正常。感谢您的帮助，尤其是错误报告，这些都是我救的。再次感谢

通过功能和外部文件连接到数据库

2 个答案: