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PHP if option 0 is choosen then set timestamp in col

220061

Well-Known Coder
Hello I'm kinda stuck here and I don't know what to do. I have this code where I want to (based on the choice that the user made) put the timestamp into my table

its goes like this if you choose option 1 then insert NULL into both the columns inlever_datum and uitleen_datum
if you choose option 0 then insert the current timestamp in Y-m-d into uitleen_datum and for inlever_datum put a day 7 days later (so current time + 7 days)
now I have this code
PHP:
<div class="container">
        <div class="form">
        <h2>Apparaten toevoegen</h2>
        <form action="<?php echo htmlspecialchars($_SERVER['PHP_SELF']); ?>" method="post">
        <!--naam van het apparaat-->
        <label for="naam">Naam </label><br>
        <input type="text" name="naam" id="naam" required="required"> <br><br/><br/>
        <!--beschrijving van het product -->
        <label for="beschrijving">Beschrijving </label>
        <input type="text" name="beschrijving" id="beschrijving" required="required">
         <br><br/><br/>
        <!--beschikbaar dropdown-->
<!--this is where the option part is -->
        <label for="beschikbaar">Beschikbaar </label><br>
        <select name="beschikbaar" class="beschikbaar" value="true" required="required"'>
            <option hidden>--Select option--</option>
            <option value="1">Beschikbaar</option>
            <option value="0">Uitgeleend</option>
        </select>
        <!--submit button-->
        <br><br><input type="submit" value="Toevoegen" name="submit">
        <?php
        //link voor het stoppen van empty values
        //dit zou alles naar de database moeten sturen als je op de knop drukt
        // informatie naar de DB sturen
        if (isset($_POST["submit"])) {
             date_default_timezone_set("America/New_York");
             switch($_POST['beschikbaar']){
                 case "1":
                     $date = date("Y/m/d"); //works
                     var_dump($date);
                     //empty table
                     $stmt = $conn->prepare("INSERT INTO apparatuur( inlever_datum, uitleen_datum ) VALUES ('%s', NULL)");
                     var_dump($stmt); // gives false??
                     $stmt->bind_param("i", $inlever_datum);
                     $stmt->execute();
                     break;
                case "0":
                     $date = date("Y/m/d");
                     var_dump($date);
                     // + 7 dagen
                     $stmt = $conn->prepare("INSERT INTO apparatuur( uitleen_datum ) VALUES ('%s', CURDATE())");
                     var_dump($stmt);
                     $stmt->bind_param("i", $uitleen_datum);
                     $stmt->execute();
                     break;
                 default:
                     echo "<p>U heeft geen optie gekozen</p>";
                 }
                 echo $stmt;
            //dit nog veranderen voor als optie 0 word aangeklikt
            //prepared statement
                $stmt = $conn->prepare("INSERT INTO apparatuur (naam, beschrijving,beschikbaar)
                VALUES (?,?,?)");
                $stmt->bind_param("ssi", $naam, $beschrijving,$beschikbaar);
                $stmt->execute();
                function_alert("Apparaat is toegevoegd");
                $conn->close();
        }
        ?>
        </form>
    </div>
    </div>
</body>
<footer>
<script>
if ( window.history.replaceState ) {
  window.history.replaceState( null, null, window.location.href );
}
</script>
</footer>
</html>

what am I doing wrong here ???
 
You never said what's happening. BUY
$stmt = $conn->prepare("INSERT INTO apparatuur( uitleen_datum ) VALUES ('%s', CURDATE())");
has one column and two values.
just saw that but it still doesnt fix my errors :
Errors:
Notice: Query was empty[] in C:\xampp\htdocs\uitleensysteem\code\edit.php on line 151

Fatal error
: Uncaught Error: Call to a member function bind_param() on boolean in C:\xampp\htdocs\uitleensysteem\code\edit.php:152 Stack trace: #0 {main} thrown in C:\xampp\htdocs\uitleensysteem\code\edit.php on line 152


PHP:
<?php
        //link voor het stoppen van empty values
        //dit zou alles naar de database moeten sturen als je op de knop drukt
        
        // informatie naar de DB sturen
        if (isset($_POST["submit"])) {
            date_default_timezone_set("America/New_York");
            $date = $_POST['beschikbaar'];
            switch($date){
                case "1":
                    $sql = $conn->prepare("INSERT INTO apparatuur( inlever_datum, uitleen_datum ) VALUES( NULL, NULL );");
                    $stmt = $conn->prepare($sql) or trigger_error($conn->error."[$sql]");
                    $stmt->bind_param('i', $inlever_datum);
                    $status = $stmt->execute();
                    break;
                case "0":
                    
                    $sql = $conn->prepare("INSERT INTO apparatuur( uitleen_datum ) VALUES( CURDATE() );");
                    $stmt = $conn->prepare($sql) or trigger_error($conn->error."[$sql]");
                    $stmt->bind_param('i', $uitlever_datum);
                    $status = $stmt->execute();
                    break;
                default:
                    echo "<p>U heeft geen optie gekozen</p>";
                }
 
did an update on it but right now the only problem that I have is that $stmt returns false. why is that?
PHP:
        // informatie naar de DB sturen
        if (isset($_POST["submit"])) {
            date_default_timezone_set("America/New_York");
            $date = date("YYYY-MM-DD");
            switch($_POST['beschikbaar']){
                case "1":
                    $id = $_GET['id'];
                    //perfectly works
                    $sql = "UPDATE apparatuur SET inlever_datum=NULL, uitleen_datum=NULL WHERE id=$id";
                    $stmt = $conn->prepare($sql);
                    $stmt->bind_param('ssi', $inlever_datum, $uitleen_datum, $id);
                    $status = $stmt->execute();
                    break;
                case "0":
                    //doesn't work
                    $id = $_GET['id'];
                    $date = date("Y-m-d", strtotime($date));
                    $new_date = date('Y-M-d', strtotime($date. '+7 day'));
                    $sql = "UPDATE apparatuur SET inlever_datum = $new_date, uitleen_datum = $date WHERE id=$id";
                    $stmt = $conn->prepare($sql);
                    var_dump($stmt);// false???
                    $stmt->bind_param('iii', $inlever_datum, $uitleen_datum, $id);
                    $status = $stmt->execute();
                    break;
                default:
                    echo "<p>U heeft geen optie gekozen</p>";
                }
 

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