php脚本仅将第一个图像上传到数据库

Question

我有一个需要在其中上传一些图片的表格，但是当我在上传器中上传图片时，只会保存第一张图片。 我不知道问题出在哪里。非常感谢您的时间和帮助。

PHP

这是将图片添加到我的数据库中的php脚本

session_start();

include '../../include/config.php';

// Create random name
function generateRandomString($length = 25) {
    $characters = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
    $randomString = '';
    for ($i = 0; $i < $length; $i++) {
        $randomString .= $characters[rand(0, strlen($characters) - 1)];
    }
    return $randomString;
}

// Upload product image
$productimg = generateRandomString();
$allowedExts = array("gif", "jpeg", "jpg", "png");

$temp = explode(".", $_FILES["pimage"]["name"]);
$extension = end($temp);

$productimg = $productimg . "." . $extension;
move_uploaded_file($_FILES["pimage"]["tmp_name"],
"../../images/products/" . $productimg);


// Add product image
$sqlImage = "INSERT INTO productimages (pid, pimage) VALUES (" . $_REQUEST['pid'] . ",'" . $productimg . "')";

try{
    $queryimg = $db->prepare($sqlImage);

    $queryimg->execute();
    }
    catch(PDOException $ecop) {
        die($ecop->getMessage());
    }


//Select new default image
$sqlNewImage = "SELECT * FROM productimages WHERE pid=" . $_REQUEST['pid'];
try{
    $query = $db->query($sqlNewImage);

    $query->setFetchMode(PDO::FETCH_ASSOC);

    $row = $query->fetch();

    if ($query->rowCount() > 0) { 

        $newIMG = $row['pimage'];

    }else
    {
        $newIMG = "default.png";
    }
    }
    catch(PDOException $e) {
        die($e->getMessage());
    }
$sqlUpdateImage = "UPDATE products SET pimage = '" . $newIMG . "' WHERE id = " . $_REQUEST['pid'];

try{
    $query = $db->prepare($sqlUpdateImage);

    $query->execute();
    }
    catch(PDOException $e) {
        die($e->getMessage());
    }
$myUrl = "Location: ../index.php?p=edit&pid=" . $_REQUEST['pid'];
header($myUrl);

HTML

这是html代码，带有功能的表单在哪里

                    <form action="functions/upload_image.php?pid=<?php echo $productid; ?>" method="post" class="form-horizontal" enctype="multipart/form-data" data-parsley-validate>

                        <div class="form-group">
                            <label for="cimage" class="control-label col-lg-4">Nahrát obrázek</label>
                            <div class="col-lg-8">
                              <input type="file" name="pimage" id="pimage" multiple="true"/>
                            </div>
            </div>
                          <div class="form-group">
                              <center><button class="btn btn-lg btn-success" type="submit"><i class="fa fa-upload"></i> Nahrát</button></center>
                          </div>
                    </form>

Answer 1

为输入提供一个数组样式名称：

<input type="file" name="pimage" id="pimage[]" multiple="true"/>

然后$_FILES['pimage']中的所有条目都是数组，您可以循环将其全部插入。

$sqlImage = $db->prepare("INSERT INTO productimages (pid, pimage) VALUES (:pid, , :productimg)";
$sqlImage->bindParam(":pid", $_REQUEST['pid']);
$sqlImage->bindParam(":productimg", $productimg);

foreach ($_FILES['pimage']['name'] as $i => $name) {
    $tmp_name = $_FILES['pimage']['tmp_name'][$i];
    $temp = explode(".", $name);
    $extension = end($temp);
    $productimg = generateRandomString() . "." . $extension;
    move_uploaded_file($temp_name, "../../images/products/" . $productimg);

    try {
        $sqlImage->execute();
    } catch(PDOException $ecop) {
        die($ecop->getMessage());
    }

    // .. similar code for other queries
}

还要注意使用bindParam()来防止SQL注入。