警告：mysql_real_escape_string（），是什么意思？ [关闭]

I get these errors:

Warning: mysql_real_escape_string() [function.mysql-real-escape-string]: Access denied for user 'a2955851'@'localhost' (using password: NO) in /home/a2955851/public_html/register.php on line 25

Warning: mysql_real_escape_string() [function.mysql-real-escape-string]: Access denied for user 'a2955851'@'localhost' (using password: NO) in /home/a2955851/public_html/register.php on line 26

and i get these errors:

Warning: mysql_real_escape_string() [function.mysql-real-escape-string]: A link to the server could not be established in /home/a2955851/public_html/register.php on line 25

Warning: mysql_real_escape_string() [function.mysql-real-escape-string]: A link to the server could not be established in /home/a2955851/public_html/register.php on line 26

there is my code:

      <!doctype html>
    <html lang"fi">
        <head>
        <link rel="icon" type='image/png' href='images/logo.png'>
        <title> ASD</title>
        <link href="css/styles.css" type="text/css" rel="stylesheet">
    </head>
    <body>
        <!--reg alkaa-->
        <form action="register.php" method="post">
            <p><input type="text" name="username" placeholder="Username">
            <p><input type="email" name="email" placeholder="Email">
            <p><input type="password" name="pass" placeholder="Password">
            <p><input type="password" name="pass1" placeholder="Password">
            <p><input type="submit" name="submit" value="Register">
        </form>
    <?php

    if (isset($_POST['submit'])) {
        $username = mysql_real_escape_string($_POST['username']);
        $pass = mysql_real_escape_string($_POST['pass']);
        $pass1 = mysql_real_escape_string($_POST['pass1']);
        $email = mysql_real_escape_string($_POST['email']);

        if ($username && $pass && $pass1 && $email) {
            if ($pass==$pass1) {
                $connect = mysql_connect("mysql13.000webhost.com","a2955851_SW","********");
                mysql_select_db("a2955851_SW");
                $query = mysql_query("INSERT INTO users VALUES('$username','$pass','$email');");
                echo "You have been registered.";
            } else {
                echo "Password must match.";
            }
        } else {
            echo "All fields are required.";
        }
    }

     ?>
        <!--reg loppuu-->

        <Center>
        <a href="index.php">   
            <h1> ASD </h1>
        </center>
        </a>


        <div id="main">
            <h3>
            <div class="menu"> <a href="index.php">Etusivu</a> &bullet;     
                <a href="https://www.google.fi/">Kaikkee</a> &bullet; 
                <a href="https://www.mediafire.com/">Lataukset</a>  </div>
            </h3>
        </div>

        <div class="jonne"> </div>
        <script src="javascript/jquery.js"></script>
    </body>
</html>

What did I do wrong? i use 000webhost and i'm noob. My english skill is very bad, sorry.

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1条回答默认最新

doushishi2415 2014-09-03 16:33

关注

Need to connect before real_escape. I suggest you to use mysqli. You can try this.

$connect = mysqli_connect("mysql13.000webhost.com","a2955851_SW","********");

if(isset($_POST['submit']))
{
    $username = mysqli_real_escape_string($connect, $_POST['username']);
    $pass = mysqli_real_escape_string($connect, $_POST['pass']);
    $pass1 = mysqli_real_escape_string($connect, $_POST['pass1']);
    $email = mysqli_real_escape_string($connect, $_POST['email']);
    if($username && $pass && $pass1 && $email)
    {
        if($pass==$pass1)
        {
            mysqli_select_db($connect, "a2955851_SW");
            $query = mysqli_query($connect, "INSERT INTO users VALUES('$username','$pass','$email');");
            echo "You have been registered.";
        }
        else
        {
            echo "Password must match.";
        }
    }
    else
    {
        echo "All fields are required.";
    }
}

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