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我是 PHP 新手，刚刚完成了一组用于连接、注册和登录的代码。在 MySQL 上一切正常。现在我从 MySQL 切换到 MySQLi，我遇到了问题。我需要一些关于这个问题的建议；我只是在 mysql 之后添加一个“i”还是我也必须改变一些事情？

例如：

//ob
ob_start();


//connect to database
$error = "Problem connecting";
mysql_connect('-------','------','------') or die($error);
mysql_select_db('-------') or die($error);

它像那样工作正常，但是当我将其更改为： //ob ob_start();

//connect to database
$error = "Problem connecting";
mysqli_connect('-------','------','------') or die($error);
mysqli_select_db('-------') or die($error);

如果我添加“i”或

//ob
ob_start();


//connect to database
$error = "Problem connecting";
mysqli_connect('-------','------','------','db') or die($error);

也不像上面那样工作。我想知道我是否做错了什么。

谢谢，非常感谢您的帮助，因为我是 PHP 的超级菜鸟。

注册.php

<?php

ini_set('display_errors', 1); error_reporting(E_ALL);
include 'connect.php';

if ($_POST)
{
 //get form data
 $username = addslashes(strip_tags($_POST['username']));
 $password = addslashes(strip_tags($_POST['password']));
 $email = addslashes(strip_tags($_POST['email']));

 if (!$username||!$password||!$email)
    echo "Please fill out all fields"; 
 else
 {
    //encrypt password
    $password = md5($password);

    //check if username already taken
    $check = mysql_query("SELECT * FROM Test WHERE username = '$username'") or die(mysql_error());
    if (mysql_num_rows($check)>=1)
       echo "Username already taken";

    else
    {


       //send activation email
       $to = $email;
       $subject = "Activate your account";
       $headers = "From: abc.info";
       $body = "Hello $username,\n\nYou registered and 
           need to activate your account. Click the link below or 
           paste it into the URL bar of your browser\n\nhttp://testing.com/activation.php!";

       if (!mail($to,$subject,$body,$headers))
           echo "We couldn't sign you up at this time. Please try again later.";
       else
       {
           //register into database
            mysql_query("INSERT INTO Test (username,password,email) VALUES 
                ('$username','$password','$email');") or die(mysql_error());


echo "1 record added";


       }

    }
 }
}
else
{

?>

<form action='register.php' method='POST'>
Choose username:<br />
<input type='text' name='username'><p />
Choose password:<br />
<input type='password' name='password'><p />
Email:<br />
<input type='text' name='email'><p />
<input type='submit' name='register' value='Register'>
</form>

<?php

}

?>
4

1 回答 1

-1

确保您的登录凭据正确。检查此链接http://www.w3schools.com/php/func_mysqli_connect.asp并尝试此操作。

<?php
$con=mysqli_connect("localhost","my_user","my_password","my_db");

// Check connection
if (mysqli_connect_errno($con))
  {
  echo "Failed to connect to MySQL: " . mysqli_connect_error();
  }
?>
于 2013-09-13T12:00:56.993 回答