Question

我正在创建一个社交网站。我可以选择上传最多 10 张带文字或不带文字的图片，也可以选择上传不带图片的文字。

所以下面我想看看用户是只上传文本还是带有图像的文本。如果用户只上传了文本，那么我希望将文本插入到它自己的单独表格中。如果用户上传带有图像的文本或只是图像，我也想检查一下。如何检查用户是否上传了图像，如果是，则运行图像脚本，如果没有，则跳出文件？这是我目前所拥有的。

<input name="files[]" id='files' accept="image/png,image/gif,image/jpeg" type="file" multiple="multiple" />

$date_time = date('Y-m-d_H-i-s');
$img_limit = 10;
$maxsize = 4367463;

if(isset($_POST['submit'])) {

    $errors = '';

    if ($_POST['title_post'] == '') {
        
        $errors = "Choose a topic.";

    } else {

        $create_topic = $con->prepare("INSERT INTO subtopic (subtopic, description) 
         VALUES (?, ?)");
        $create_topic->bind_param("ss", $_POST['title_post'], $_POST['description']);
        $create_topic->execute();
    }

    // --------------- CHECK IMAGES ----------****
    
    $file_count = count($_FILES['files']['name']);

    if ($file_count > 0) {

    if ($file_count > $img_limit) {
        $errors = 'Cannot upload more than 10 images';
    }

    if (!$errors) {

        $stmt = $con->prepare("INSERT INTO images (image) VALUES (?)");
        $stmt->bind_param('s', $file_path);

        // Loop through each file
        for( $i=0; $i < $file_count; $i++ ) {

            $file_name = $_FILES['files']['name'][$i];
            $file_size = $_FILES['files']['size'][$i];
            $file_tmp = $_FILES['files']['tmp_name'][$i];
        
            $imageFileType = strtolower(pathinfo($file_name, PATHINFO_EXTENSION));

            if ($file_size >= $maxsize) {

                $errors = "Your file is too large";

            } elseif ($imageFileType != "jpeg" && $imageFileType != "jpg" && 
                $imageFileType != "png" && $imageFileType != "gif") {

                $errors = "File type not allowed.";
            }
            //Make sure we have a file path
            if (!$errors /* && $file_tmp != "" */) {

                $picToUpload = $date_time . " -#- " . md5($file_name) . " -#- " . $_FILES['files']['name'][$i];
                $uploadPicture = move_uploaded_file($file_tmp, "uploads/" . $picToUpload);

                $file_path = "uploads/" . $picToUpload;
                $stmt->execute();
            }
        }
    }} else {

        header('Location: index4.php');
        exit();

    }
    // --------------- CHECK IMAGES ----------****
}

Answer 1

您需要检查当前文件 - 例如：

if(!file_exists($_FILES['files']['tmp_name'][0]) || !is_uploaded_file($_FILES['files']['tmp_name'][0])){

}

其中 0 等于 $i

检查文件是否已上传

1 个答案: