PHP-数据库中缺少条目（bind_param）

Question

Good morning, I try to fill up a database (with PHP and HTML) and followed a tutorial so far. After a few successful chapters I get stucked at the Point where I have to fill up the database with some data.
Everything seems working fine. But when I save entries it only stores 3 values. In my example are this the columns "id" "created_at" and "text". The other columns stays empty. Iam using:

• PHP Version 7.1.14
• Apache WebServer 2.0 (on Windows)
• MSVC14 (Visual C++ 2015)

(german) Tutorial

 <?php require ('dbconnect.php'); $db = mysqli_connect (MYSQL_HOST, MYSQL_BENUTZER, MYSQL_KENNWORT, MYSQL_DATENBANK); if ($db->connect_errno) { die('Sorry'); } $db->set_charset('utf8'); if (isset($_POST['aktion']) and ($_POST['aktion']=='speichern')) { $vorname = ""; if (!isset($_POST['vorname'])) { $vorname = trim($_POST['vorname']); } $email = ""; $if (!isset($_POST['email'])) { $email = trim($_POST['email']); } $nachname = ""; if (isset($_POST['name'])) { $name = trim($_POST['name']); } $text = ""; if (isset($_POST['text'])) { $text = trim($_POST['text']); } $funktion=""; $created_at = date("Ymd H:i:s"); if ( $vorname != '' or $name != '' or $created_at != '' or $text != '') { $einfuegen = $db->prepare("INSERT INTO gaestebuch (name, email, text, vorname, funktion, created_at) VALUES (?,?,?,?,?,NOW())"); $einfuegen->bind_param('sssss', $vorname, $email, $text, $nachname, $funktion); $einfuegen->execute(); if ($einfuegen->execute()) { header('Location: config.php?aktion=feedbackgespeichert'); die(); echo "<h1>gespeichert</h1>"; } } } if (isset($_POST['aktion']) and $_POST['aktion']=='feedbackgespeichert') { echo "<p>Es liegen keine Daten vor :(</p>"; } $daten = array(); if ($erg = $db->query("SELECT * FROM gaestebuch")){ if ($erg->num_rows) { while($datensatz = $erg->fetch_object()) { $daten[] = $datensatz; } $erg->free(); } } if (!count($daten)) { echo "<p>no data :</p>"; } else { ?> <table> <thead> <tr> <th>ID</th> <th>name</th> <th>vorname</th> <th>email</th> <th>text</th> <th>funktion</th> <th>created_at</th> <th>deleted_at</th> </tr> </thead> <tbody> <?php foreach ($daten as $inhalt){ ?> <tr> <td><?php echo $inhalt->id; ?></td> <td><?php echo $inhalt->name; ?></td> <td><?php echo $inhalt->vorname; ?></td> <td><?php echo $inhalt->email; ?></td> <td><?php echo $inhalt->text; ?></td> <td><?php echo $inhalt->funktion; ?></td> <td><?php echo $inhalt->created_at; ?></td> <td><?php echo $inhalt->deleted_at; ?></td> </tr> <?php } ?> </tbody> </table> <?php } ?> <form action="" method="post"> <label>Vorname: <input type="text" name="vorname" id="vorname"> </label> <label>Nachname: <input type="text" name="name" id="name"> </label> <label>email: <input type="text" name="email" id="email"> </label> <label>text: <textarea name="text" id="text"></textarea> </label> <label>funktion: <textarea name="funktion" id="funktion"></textarea> </label> <input type="hidden" name="aktion" value="speichern"> <input type="submit" value="speichern"> </form> 

Can anyone help me? :)

Answer 1

Your 2 if conditions are logically wrong:

these

if (!isset($_POST['vorname'])) {
    $vorname = trim($_POST['vorname']); 
}
$email = "";
$if (!isset($_POST['email'])) {
    $email = trim($_POST['email']);
}

should be:

if (isset($_POST['vorname'])) {
    $vorname = trim($_POST['vorname']); 
}
$email = "";
$if (isset($_POST['email'])) {
    $email = trim($_POST['email']);
}