Question

我正在尝试为即将举行的婚礼设置在线RSVP。我试图通过GoDaddy的托管使我的代码从使用SQLServer到mySQL。在我的数据库连接文件中，我有以下代码：

<?php


// function to connect to the database

function dbConnect()
{
    $serverName = 'localhost';
    $uName = 'codytaylorbrown';
    $pWord = 'G0Braves!';
    $db = 'BrownWedding';

    try
    {
        //instantiate a PDO object and set connection properties

        $conn = mysql_connect($serverName , $uName , $pWord );
mysql_select_db($db, $conn);


        //return connection object

        return $conn;
    }
    // if connection fails

    catch (PDOException $e)
    {
        die('Connection failed: ' . $e->getMessage());
    }
}

//method to execute a query - the SQL statement to be executed, is passed to it

function executeQuery($query)
{
    // call the dbConnect function

    $conn = dbConnect();

    try
    {
        // execute query and assign results to a PDOStatement object

        $stmt = $conn->query($query);

        do
        {
            if ($stmt->columnCount() > 0)  // if rows with columns are returned
            {
                $results = $stmt->fetchAll(PDO::FETCH_ASSOC);  //retreive the rows as an associative array
            }
        } while ($stmt->nextRowset());  // if multiple queries are executed, repeat the process for each set of results
     die;

//call dbDisconnect() method to close the connection

        dbDisconnect($conn);

        return $results;
    }
    catch (PDOException $e)
    {
        //if execution fails

        dbDisconnect($conn);
        die ('Query failed: ' . $e->getMessage());
    }
}
function dbDisconnect($conn)
{
    // closes the specfied connection and releases associated resources

    $conn = null;
}

?>

当我打开我的RSVP.php页面，其中包含一个表单并引用另一个php文件将结果发布到数据库时，我收到错误

Fatal error: Call to a member function query() on a non-object in /home/ctbrown24/public_html/DBConnect.php on line 50

我并不是非常精通php并且正在建立我的婚礼网站作为一种学习方式，所以任何帮助都将受到赞赏。 TIA！

Answer 1

您使用mysql API在第一步中连接到数据库，但是如果您使用的是mysqli API，那么您将尝试检索预期的连接对象。您对查询方法的后续调用不起作用，因为您没有处理mysqli连接对象。

阅读本文以获取有关此主题的更多信息： http://php.net/manual/en/mysqlinfo.api.choosing.php

＆＃34;致命错误：在非对象上调用成员函数query（）＆＃34;数据库连接

1 个答案: