如果发生错误，则停止所有文件上传 - PHP

Question

我创建了一些代码，允许用户在 MySQL 数据库中上传一些图像。这是我的两个问题：当发生错误时，例如因为文件不是图像，有问题的文件不会被加载，但其他文件会加载。相反，我希望即使只是发生错误，也不会上传任何文件。示例：如果我上传 3 个文件，其中 1 个不是图片：我现在不想要的输出：File 1 uploaded File 2 uploaded Just JPG and PNG images are allowed // file 3 not uploaded我期望拥有：No files uploaded // Even if a single file is not good, nobody gets uploaded如果我上传n 个文件，将打印n 条消息。例如，如果我上传 3 个文件，输出将是：File 1.png upload correctly File 2.png upload correctly File 3.png upload correctlyBut what I hope to have only one sentence, like 3 files uploaded.这是我的代码：$timestamp = time();$total = count($_FILES[ 'upload' ][ 'name' ]);                if ($total==0) {                    echo "Please upload at least one file";                    $uploadOk = 0;                } else {                    $tmpFilePath = $_FILES['upload']['tmp_name'][$i];                    for($i = 0; $i < $total; $i++) {                        if ($tmpFilePath != '') {                            $newFilePath = "./uploadFiles/" . $_FILES['upload']['name'][$i];                            $completeFileName = basename($_FILES["upload"]["name"][$i]);                            $target_file = "uploads/$completeFileName"; $uploadOk = 1;                            $estensione = strtolower(pathinfo($target_file, PATHINFO_EXTENSION));                            $Name = basename($_FILES["upload"]["name"][$i]);                            if($extension != 'jpg' && $extension != 'png') {                                echo "Only JPG and PNG files are allowed";                                $uploadOk = 0;                            } 

Answer 1

<?php

/*

 * CREATE TABLE `uploads` (

  `id` int(11) unsigned NOT NULL AUTO_INCREMENT,

  `timestamp` int(11) DEFAULT NULL,

  `file` varchar(400) DEFAULT NULL,

  PRIMARY KEY (`id`)

) ENGINE=InnoDB DEFAULT CHARSET=utf8;

 */

$mysqli = new mysqli('localhost', 'devel', 'devel', 'upload_db');

$timestamp = time();

$success_images = [];

$total = count($_FILES[ 'upload' ][ 'name' ]);

if ($total == 0) {

    echo "Please upload at least one file";

    $uploadOk = 0;

} else {

    $uploadOk = 1;

    for ($i = 0; $i < $total; $i++) {

        $tmpFilePath = $_FILES[ "upload" ][ "tmp_name" ][ $i ];

        if ($tmpFilePath != '') {

            $newFilePath = "./uploadFiles/" . $_FILES[ 'upload' ][ 'name' ][ $i ];

            $Name = basename($_FILES[ "upload" ][ "name" ][ $i ]);

            $parts = pathinfo($Name);

            $extension = strtolower($parts[ 'extension' ]);

            if ($extension == 'jpg' || $extension == 'png') {

                // there may be $newFilePath I think

                if (move_uploaded_file($_FILES[ "upload" ][ "tmp_name" ][ $i ], $newFilePath)) {

                    $mysqli->query("INSERT INTO uploads (timestamp, file) VALUES ('$timestamp', '$Name')");

                    $id = $mysqli->insert_id;

                    $success_images[ $id ] = $newFilePath;

                    $uploadOk = 1;

                } else {

                    echo "Error";

                    $uploadOk = 0;

                    break; // break loop !!!

                }

            } else {

                echo "Just JPG and PNG files are allowed";

                $uploadOk = 0;

                break;

            }

        }

    }

    if ($uploadOk === 0) {

        foreach ($success_images as $id => $filename) {

            // `id` - primary key of table uploads?

            $mysqli->query(sprintf('DELETE FROM uploads WHERE `id`=%d', $id));

            if (file_exists($filename)) {

                unlink($filename);

            }

        }

    } else {

        foreach ($success_images as $id => $filename) {

            echo "<h2>The file <i>$filename</i> has been uploaded.</h2>";

        }

    }

}

?>

<form method="POST" enctype="multipart/form-data">

    <input type="file" multiple name="upload[]"/>

    <input type="submit" value="do_upload"/>

</form>