Question

您好我已经在谷歌过了3个小时了，我只是找不到我的代码中的错误，我总是得到（抱歉，您的注册失败。请回去再试一次。）就像我的registerquery是空的。我想我已经做对了...感谢您的帮助，我做了一些改动，但仍然无法做到：/

<?php
if(!empty($_POST['username']) && !empty($_POST['password'])&& !empty($_POST['password1']))
{

    $servername = "localhost";
    $name = "root";
    $pass = "";
    $dbname = "users";
    $link = mysqli_connect($servername, $name, $pass, $dbname); 
if (!$link) {
    die("Connection failed: " . mysqli_connect_error());
  }
} 

    $username = mysqli_real_escape_string($link,$_POST['username']);
    $password = password_hash($_POST['password'], PASSWORD_DEFAULT);
    $password1 = password_hash($_POST['password1'], PASSWORD_DEFAULT);
    $email = mysqli_real_escape_string($link,$_POST['email']);
    $checkusername = mysqli_query($link,"SELECT * FROM users WHERE Username = '".$username."'");
     if(mysqli_num_rows($checkusername) == 1)
     {
        echo "<h1>Error</h1>";
        echo "<p>Sorry, that username is taken. Please go back and try again.</p>";
     }
     else
     {
        $registerquery = mysqli_query($link,"INSERT INTO users (ID,Username,Password,EmailAddress) VALUES(NULL,'".$username."', '".$password."', '".$email."')");
        echo($registerquery);
        if($registerquery)
        {
            echo "<h1>Success</h1>";
            echo "<p>Your account was successfully created. Please <a href=\"index.php\">click here to login</a>.</p>";
        }
        else
        {
            echo "<p>Sorry, your registration failed. Please go back and try again.</p>";    
        }       
     }
mysqli_close($link);
?>

Answer 1

您使用mysql_real_escape_string其余部分使用mysqli（因为您应该这样做，因为mysql_*已被弃用）。
mysql_real_escape_string将无效，并且将返回false，因此$username === false。首先连接，然后逃跑。

您需要在此处使用的功能是mysqli_real_escape_string($link, $var)。

咨询http://php.net/manual/en/mysqli.real-escape-string.php

无法通过mysqli

1 个答案: