php - 'SQLSTATE[HY093]，我是否把逗号放错了？

Question

我的代码大部分已经运行起来了。我似乎不断地一遍又一遍地犯同样的错误。我认为这是因为我在错误的地方放了逗号，但我不知道。谁能帮我看一下这段代码吗？

<?php
    $db_server = "localhost";
    $db_username = "root";
    $db_password = "";
    $db_database = "meubelfabriek";
    $conn = new PDO("mysql:host=$db_server;dbname=$db_database", $db_username, $db_password);
    $conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
    if(isset($_POST['submit']))
    {
        $prijs = $_POST['prijs'];
        $naam = $_POST['fname'];
        $beschrijving = $_POST['desc'];
        $maat1 = $_POST['maat1'];
        $maat2 = $_POST['maat2'];
        $maat3 = $_POST['maat3'];
        $maat4 = $_POST['maat4'];
        $imageName = $_FILES["image"]["name"];
        $imageData = file_get_contents($_FILES["image"]["tmp_name"]);
        $imageType = $_FILES["image"]["type"];
        if(substr($imageType,0,5)=="image")
        {
            $stmt = $conn->prepare("INSERT INTO producten ( naam, beschrijving, prijs, maat1, maat2, maat3, maat4, namen, image ) VALUES (  :naam, :beschrijving, :prijs,  :maat1, :maat2, :maat3, maat4,'$imageName', " . $conn->quote($imageData) . ")");
            $stmt->execute(array(":naam"=>$naam, ":beschrijving"=>$beschrijving, ":prijs"=>$prijs, ":maat1"=>$maat1, ":maat2"=>$maat2, ":maat3"=>$maat3, ":maat4"=>$maat4));;
        }
        else
        {
            echo "Oops, something went wrong!";    
        }
    }
?>

Answer 1

您错过了::

:maat2, :maat3, maat4,'$imageName',  // There is a missing : before maat4