Question

我正在尝试使用php创建一个网页。问题是，有时候我会收到服务器错误，而有时我根本得不到任何回报。有一次，服务器自己更改了文件类型。我不知道问题是什么。

由于我实际上不知道问题是什么，我在这里粘贴整个文件，即使我希望它是问题的前几行（我把它放在这里：http://www.iandapp.com/smic/subscription.php）：

<?php header('Content-Type: text/html; charset=ISO-8859-1');

echo("<div id='subscribe'>");

$mail = $_POST['email1'];

//Set the locale format, etc. of date and time
date_default_timezone_set('Europe/Stockholm');
setlocale(LC_TIME, "sv_SV");

//Create the db-connection
$mysqli = mysqli_connect("mydb", "myuser", "mupsw", "myschema", "3306");

//If verifying the subscription, makse sure the db is updated accordingly
if($_GET['newid'] != ""){
    //Make the subscriber a verified subscriber
    $result = mysqli_query($mysqli,"UPDATE users SET subscriber = 1 WHERE id = " . $_GET['newid']);
    if($result){
        echo("<p>Welcome to our newsletter! We will send you information about any new application or update. This will not happen too often, but once it does we hope you will have the opportunity to look into our site again.<p/>");
        echo("<p><br/>If you wish to unsubscribe from this mail-list, please visit out subscription page: <a href="http://" . $_SERVER['HTTP_HOST'] . "/subscription.php"> http://" . $_SERVER['HTTP_HOST'] . "/subscription.php </a> <p/>");
    }else{
        echo("<p>Somthing went wrong, please click the link again!<p/>");
    }

}elseif($_POST['email1'] != ""){ //Only do things if there is an e-mail posted

    //Make sure the ID is unique
    do{
        $rand_int = rand(100000000, 999999999);
        $result = mysqli_query($mysqli, "SELECT id FROM users WHERE id = " . $rand_int);

        $no_of_rows = mysqli_num_rows($result);

        }while($no_of_rows != 0);
    echo("RAND :".$rand_int);

    //Create query for saving the new user e-mail
    $query = "INSERT INTO users(id, email, first_name, surname) VALUES ('" . $rand_int . "', '".$_POST['email1']."', '". $_POST['first_name']."','".$_POST['surname']."')";
    $re = mysqli_query($mysqli, $query);
    echo("Result: ".$re);

    //Check if mail already exist (Error code 1062 = dublicate entries for unique fields)
    $existing = 0;
    if(mysqli_errno($mysqli)==1062){
        echo("It seems like your e-mail already is registered. Perhaps you have been a subscriber earlier? By clicking the link that you will receive in your mail box you subscribe to the newsletter again. ");
        $existing = 1;
        $result = mysqli_query($mysqli,"SELECT id FROM users WHERE email = '" . $_POST['email1'] . "'");
        $row = mysqli_fetch_array($result, MYSQLI_ASSOC);
        $rand_int = $row['id'];
        mysqli_query($mysqli,"UPDATE users SET waiting_for_unsubscribe = 0 WHERE email = '" . $_POST['email1'] . "'");
        if(mysqli_errno($mysqli)){
        echo("Error code " . mysqli_errno($mysqli) . "<br/>");
        echo("Error text " . mysqli_errno($mysqli) . "<br/>");
    }
        //echo("ID------ " . $row['id'] . " ri---- " . $rand_int);
    }



    //Create the link for the user to verify the subscription
    $url = "http://" . $_SERVER['HTTP_HOST'] . "/smic/subscription.php?newid=" . $rand_int;     


    $mymail = $_POST['email1'];
    $esubject = "Please verify your subscription to iAndApp's newsletter ";
    $body = "Click the link in order to verify your subscription (If you cannot click the link, just copy it and paste it into the adress field of your browser): " . $url;
    $eemail = "NoReply@iandapp.com";
    $sent = mail($mymail,$esubject,$body,"From: $eemailn");
    if($sent){
        if($existing != 1){
            echo "<br/>An e-mail with a link has been sent to ". $mymail . ". Please click the link in order to verify your subscription";
        }
    }else{
        echo "Something went wrong. Please try again and make sure you enter a correct e-mail adress.";
    }
    $existing = 0;

mysqli_free_result($result);

//If unsubscribing
}elseif($_POST['unsubscribedmail'] != ""){
    //echo("Unsubscribe........");
    //echo($_POST['unsubscribedmail']);
    $result = mysqli_query($mysqli,"UPDATE users SET waiting_for_unsubscribe = 1 WHERE email = '" . $_POST['unsubscribedmail'] . "'");

    //echo("Err code " . mysqli_errno($mysqli));
    //echo("Err text " . mysqli_error($mysqli));
    if(mysqli_errno($mysqli)){
        echo("Error code " . mysqli_errno($mysqli) . "<br/>");
        echo("Error text " . mysqli_errno($mysqli) . "<br/>");
    }

    $result = mysqli_query($mysqli,"SELECT id FROM users WHERE email = '" . $_POST['unsubscribedmail'] . "'");
    $row = mysqli_fetch_array($result, MYSQLI_ASSOC);
    //echo("ID------ " . $row['id']);
    //Create the link for the user to verify that he/she  unsubscribes
    $url = "http://" . $_SERVER['HTTP_HOST'] . "/smic/subscription.php?unsubscribeid=" . $row['id'];

    $mymail = $_POST['unsubscribedmail'];
    $esubject = "Please verify that you want to unsubscribe from iAndApp's newsletter ";
    $body = "Click the link in order to verify that you want to unsubscribe from iAndApp's newsletter (If you cannot click the link, just copy it and paste it into the adress field of your browser): " . $url;
    $eemail = "NoReply@iandapp.com";
    $sent = mail($mymail,$esubject,$body,"From: $eemailn");
    if ($sent) echo "<br/>A mail with a link has been sent to ". $mymail . ". Please click the link in order to verify that you will unsubscribe from the newsletters.";
    else echo "Something went wrong. Please try again and make sure you enter a correct e-mail adress.";

mysqli_free_result($result);    
}elseif($_GET['unsubscribeid'] != ""){
    $result = mysqli_query($mysqli,"UPDATE users SET subscriber = 0, waiting_for_unsubscribe = 0 WHERE id = " . $_GET['unsubscribeid']);
    if($result){
        echo("<p>You have now unsubscribed to the newsletter. Thank you for this time and we hope to see you again in the future. /iAndApp.<p/>");
    }else{
        echo("<p>Somthing went wrong, please click the link again!<p/> ".$result);
    }

}else{

echo("<div class="subscribe">
<h4>Subscribe</h4>
<p>Subscribe to iAndApp's newsletter in order to get information about new and updated iPhone games and iPhone applications, that has been released by iAndApp. </p>
<form action="subscription.php" name="subscribe" method="post"  onsubmit="return isValidEmailAndEqual()">
<p class="formlabel">Förnamn</p> <input type="text" name="first_name"/><br/>
    <p class="formlabel">Efternamn</p> <input type="text" name="surname"/> <br/>
<p class="formlabel">E-mail</p> <input type="text" name="email1"/>
<br/>
<p class="formlabel">Repeat e-mail</p> <input type="text" name="email2"/> <br/>
<input class="inputsubmit" type="submit" value="Subscribe"/>
</form>
</div>");

echo("<div class="footer"></div>");


echo("<div class="subscribe">
<h4>Unsubscribe</h4>
<p>Fill in your e-mail address and submit in order to unsubscribe from iAndApp's newsletter. </p>
<form action="subscription.php" name="unsubscribe" method="post"  onsubmit="return isValidEmail()">
<p class="formlabel">E-mail</p> <input type="text" name="unsubscribedmail"/><br/>
<input class="inputsubmit" name="submitbutton" type="submit" value="Unsubscribe"/>
</form>
</div>");

}

mysqli_close($mysqli);

echo("</div>");

?>

当然，我不希望你经历并调试整个应用程序，但也许对那些更有经验的人来说，你知道在哪里看。

我开始有点紧张了......

请告知问题是什么以及如何解决。

提前谢谢！

Answer 1

代码中的

错误：

echo("<div class="subscribe">
<h4>Subscribe</h4>
<p>Subscribe to i

在第一行中，您只需按第二个引号关闭字符串即可你只需要纠正代码

Answer 2

你必须在html标签内转义双引号或使用单引号。现在，echo认为它在"<div class="之后关闭了。使用其中一个：

echo "<div class=\"class\">";

或

echo '<div class="class">';

或

echo "<div class='class'>";

Answer 3

如果您没有从服务器获取任何转发（文档清除）或您有服务器错误但这不是所有时间，有时脚本工作正常，它可能是内存限制问题。

do{
    $rand_int = rand(100000000, 999999999);
    $result = mysqli_query($mysqli, "SELECT id FROM users WHERE id = " . $rand_int);

    $no_of_rows = mysqli_num_rows($result);

    }while($no_of_rows != 0);

这部分代码对我来说不太好看，我建议你在db中的id字段使用auto_increment（所以id一直都是唯一的）

Echo没有使用php在页面上打印

3 个答案: