如何使此脚本上传图像和 zip 文件

Question

我试图制作一个上传和下载脚本，用户在其中上传文件并将这些文件插入 database.I 知道这不是一个好方法，但它是唯一对我有用的方法。
在上传脚本中，它会上传 .txt、.doc 等文件，但不会上传 zip 文件和图像文件。请帮助我。
这是上传脚本的代码

    <?php
// Check if a file has been uploaded
if(isset($_FILES['uploaded_file'])) {
    // Make sure the file was sent without errors
    if($_FILES['uploaded_file']['error'] == 0) {
        // Connect to the database
        $dbLink = new mysqli('localhost', 'root', '', 'myTable');
        if(mysqli_connect_errno()) {
            die("MySQL connection failed: ". mysqli_connect_error());
        }

        // Gather all required data
        $name = $dbLink->real_escape_string($_FILES['uploaded_file']['name']);
        $mime = $dbLink->real_escape_string($_FILES['uploaded_file']['type']);
        $data = $dbLink->real_escape_string(file_get_contents($_FILES  ['uploaded_file']['tmp_name']));
        $size = intval($_FILES['uploaded_file']['size']);

        // Create the SQL query
        $query = "
            INSERT INTO `file` (
                `name`, `mime`, `size`, `data`, `created`
            )
            VALUES (
                '{$name}', '{$mime}', {$size}, '{$data}', NOW()
            )";

        // Execute the query
        $result = $dbLink->query($query);

        // Check if it was successfull
        if($result) {
            echo 'Success! Your file was successfully added!';
        }
        else {
            echo 'Error! Failed to insert the file'
               . "<pre>{$dbLink->error}</pre>";
        }
    }
    else {
        echo 'An error accured while the file was being uploaded. '
           . 'Error code: '. intval($_FILES['uploaded_file']['error']);
    }

    // Close the mysql connection
    $dbLink->close();
}
else {
    echo 'Error! A file was not sent!';
}

// Echo a link back to the main page
echo '<p>Click <a href="index.html">here</a> to go back</p>';
?>

这是下载脚本

<?php
    // Make sure an ID was passed
    if(isset($_GET['id'])) {
    // Get the ID
        $id = intval($_GET['id']);

        // Make sure the ID is in fact a valid ID
        if($id <= 0) {
            die('The ID is invalid!');
        }
        else {
            // Connect to the database
            $dbLink = new mysqli('localhost', 'root', '', 'myTable');
            if(mysqli_connect_errno()) {
                die("MySQL connection failed: ". mysqli_connect_error());
            }

            // Fetch the file information
            $query = "
                SELECT `mime`, `name`, `size`, `data`
                FROM `file`
                WHERE `id` = {$id}";
            $result = $dbLink->query($query);

            if($result) {
                // Make sure the result is valid
                if($result->num_rows == 1) {
                // Get the row
                    $row = mysqli_fetch_assoc($result);

                    // Print headers
                    header("Content-Type: ". $row['mime']);
                    header("Content-Length: ". $row['size']);
                    header("Content-Disposition: attachment; filename=". $row['name']);

                    // Print data
                    echo $row['data'];
                }
                else {
                    echo 'Error! No image exists with that ID.';
                }

                // Free the mysqli resources
                @mysqli_free_result($result);
            }
            else {
                echo "Error! Query failed: <pre>{$dbLink->error}</pre>";
            }
            @mysqli_close($dbLink);
        }
    }
    else {
        echo 'Error! No ID was passed.';
    }
    ?>

Answer 1

您的代码没有限制上传（确实应该），因此 PHP 配置可能是问题所在。 php.ini 配置文件不限制上传的文件类型，所以罪魁祸首可能是图像和 zip 文件的文件大小。检查 php.ini 文件（或使用 phpinfo()），并查看最大上传大小是多少。

Answer 2

将其添加到 .htaccess 中并检查

AddType application/zip .zip
AddType image/gif .gif .GIF
AddType image/ief .ief
AddType image/jpeg .jpeg .jpg .jpe .JPG
AddType image/tiff .tiff .tif

它将启用图像和 zip mime 类型。

如何使此脚本上传图像和 zip 文件

How to make this script upload image and zip files

php

zip

mysqli