上传多文件

Question

我无法上传多个文件。我有一个包含 4 个项目的表格，每个项目都可能有一个上传的文件。

代码应该如何？

$target_dir = "uploads/";
    foreach ($_FILES as $f => $a) {
        if ($a["name"]) {
            $target_file = $target_dir . "paper_" . $id . "_" . $f[12];
            $file_name = basename($a["name"]);
            $uploadOk = 1;
            $imageFileType = strtolower(pathinfo($file_name,PATHINFO_EXTENSION));
            if($imageFileType != "jpg" && $imageFileType != "png" && $imageFileType != "jpeg"
             && $imageFileType != "pdf" && $imageFileType != "doc" && $imageFileType != "docx") {
                echo "Sorry, only JPG, JPEG, PNG, PDF, DOC and DOCX files are allowed. Your type is $imageFileType ";
                continue;
            }
            if ($a["size"] > 1024 * 1024 * 4) {
                echo "Sorry, your file is too large. Max is 4 MB";
                continue;
            }
            $col = "";
            switch ($f[12]) {
                case 1:
                    $col = "path_salary_def";
                    break;
                case 2:
                    $col = "path_social";
                    break;
                case 3:
                    $col = "path_identification";
                    break;
                case 4:
                    $col = "path_accom";
                    break;
                default:
                    die("invalid column");
            }
            $bol = substr($col, 5);
            if (move_uploaded_file($a["tmp_name"], $target_file)) {
                $query = "update papers SET $col = '$target_file', $bol = 1 WHERE id = " . $id;
                $result = mysqli_query($con,$query) or die ("Error in the data table 5");
                echo "The file $file_name has been uploaded.<br/>";
            } else {
                echo "Sorry, there was an error uploading your file.";
            }
        }
    }

Answer 1

如果您的$_FILES 数组为空，则可能您在表单中省略了enctype 属性。

应该是这样的：

<form action="yourAction.php" method="POST" enctype="multipart/form-data">