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标题 文件上传之SWFUpload插件代码
内容
    这篇文章主要介绍了文件上传之SWFUpload插件（代码）,实现此代码主要分为两部分：1.前台文件index.html和 2.后台文件upload.php，需要的朋友可以参考下
    下面通过一段代码给大家演示下，主要分为1.前台文件index.html和 2.后台文件upload.php。具体代码如下所示：
    代码如下:
    1.前台文件index.html
    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
    <html xmlns="http://www.w3.org/1999/xhtml" >
    <meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
    <head>
    <title>SWFUpload</title>
    <link href="css/default.css" rel="stylesheet" type="text/css" />
    <!--Swfupload插件begin-->
    <script type="text/javascript" src="swfupload/swfupload.js"></script>
    <script type="text/javascript" src="js/swfupload.queue.js"></script>
    <script type="text/javascript" src="js/fileprogress.js"></script>
    <script type="text/javascript" src="js/handlers.js"></script>
    <!--Swfupload插件end-->
    <script type="text/javascript">
    var swfu;
    window.onload = function() {
    var settings = {
    flash_url : "swfupload/swfupload.swf",
    upload_url: "upload.php", // 后台文件
    post_params: {"PHPSESSID" : "<?php echo session_id(); ?>"},
    file_size_limit : "100 MB",
    file_types : "*.*",
    file_types_description : "All Files",
    file_upload_limit : 100,
    file_queue_limit : 0,
    custom_settings : {
    progressTarget : "fsUploadProgress",
    cancelButtonId : "btnCancel"
    },
    debug: false,
    // 按钮设置
    button_image_url: "images/TestImageNoText_65x29.png", // Flash样式图片文件
    button_width: "65",
    button_height: "29",
    button_placeholder_id: "spanButtonPlaceHolder",
    button_text: '<span>浏览</span>',
    button_text_style: ".theFont { font-size: 16; }",
    button_text_left_padding: 12,
    button_text_top_padding: 3,
    // 句柄设置
    file_queued_handler : fileQueued,
    file_queue_error_handler : fileQueueError,
    file_dialog_complete_handler : fileDialogComplete,
    upload_start_handler : uploadStart,
    upload_progress_handler : uploadProgress,
    upload_error_handler : uploadError,
    upload_success_handler : uploadSuccess,
    upload_complete_handler : uploadComplete,
    queue_complete_handler : queueComplete
    };
    swfu = new SWFUpload(settings);
    };
    </script>
    </head>
    <body>
    <div id="header">
    <h1 id="logo"><a href="/">SWFUpload</a></h1>
    <div id="version">v2.2.0</div>
    </div>
    <div id="content">
    <form id="form1" action="index.php" method="post" enctype="multipart/form-data">
    <p>点击“浏览”按钮，选择您要上传的文档文件后，系统将自动上传并在完成后提示您。</p>
    <p>请勿上传包含中文文件名的文件！</p>
    <div id="fsUploadProgress">
    <span>快速上传</span>
    </div>
    <div id="divStatus">0 个文件已上传</div>
    <div>
    <span id="spanButtonPlaceHolder"></span>
    <input id="btnCancel" type="button" value="取消所有上传" onclick="swfu.cancelQueue();" disabled="disabled" />
    </div>
    </form>
    </div>
    <div>Hanization By <a href="http://imll.net" target="_blank">Leo.C,</a>
    </div>
    </body>
    </html>
    2.后台文件upload.php
    <?php
    // 传递session值（由于Flash与session不兼容，只能通过参数传递获取）
    if (isset($_POST["PHPSESSID"])) {
    session_id($_POST["PHPSESSID"]);
    } else if (isset($_GET["PHPSESSID"])) {
    session_id($_GET["PHPSESSID"]);
    }
    session_start();
    // 设置POST最大值
    $POST_MAX_SIZE = ini_get('post_max_size');
    $unit = strtoupper(substr($POST_MAX_SIZE, -1));
    $multiplier = ($unit == 'M' ? 1048576 : ($unit == 'K' ? 1024 : ($unit == 'G' ? 1073741824 : 1)));
    if ((int)$_SERVER['CONTENT_LENGTH'] > $multiplier*(int)$POST_MAX_SIZE && $POST_MAX_SIZE) {
    header("HTTP/1.1 500 Internal Server Error");
    echo "POST exceeded maximum allowed size.";
    exit(0);
    }
    // 基本设置
    $save_path = getcwd() . "/file/"; 　　　　　　　　　　　　// 文件上传位置
    $upload_name = "Filedata";
    $max_file_size_in_bytes = 2147483647; 　　　　　　　　　// 2GB
    $extension_whitelist = array("doc", "txt", "jpg", "gif", "png"); // 允许文件类型
    $valid_chars_regex = '.A-Z0-9_ !@#$%^&()+={}\[\]\',~`-'; // 文件名规则
    // 其他变量
    $MAX_FILENAME_LENGTH = 260;
    $file_name = "";
    $file_extension = "";
    $uploadErrors = array(
    0=>"文件上传成功",
    1=>"上传的文件超过了 php.ini 文件中的 upload_max_filesize directive 里的设置",
    2=>"上传的文件超过了 HTML form 文件中的 MAX_FILE_SIZE directive 里的设置",
    3=>"上传的文件仅为部分文件",
    4=>"没有文件上传",
    6=>"缺少临时文件夹"
    );
    // 检测文件是否上传正确
    if (!isset($_FILES[$upload_name])) {
    HandleError("No upload found in \$_FILES for " . $upload_name);
    exit(0);
    } else if (isset($_FILES[$upload_name]["error"]) && $_FILES[$upload_name]["error"] != 0) {
    HandleError($uploadErrors[$_FILES[$upload_name]["error"]]);
    exit(0);
    } else if (!isset($_FILES[$upload_name]["tmp_name"]) || !@is_uploaded_file($_FILES[$upload_name]["tmp_name"])) {
    HandleError("Upload failed is_uploaded_file test.");
    exit(0);
    } else if (!isset($_FILES[$upload_name]['name'])) {
    HandleError("File has no name.");
    exit(0);
    }
    // 检测文件尺寸
    $file_size = @filesize($_FILES[$upload_name]["tmp_name"]);
    if (!$file_size || $file_size > $max_file_size_in_bytes) {
    HandleError("File exceeds the maximum allowed size");
    exit(0);
    }
    if ($file_size <= 0) {
    HandleError("File size outside allowed lower bound");
    exit(0);
    }
    // 检测文件名字为空
    $file_name = preg_replace('/[^'.$valid_chars_regex.']|\.+$/i', "", basename($_FILES[$upload_name]['name']));
    if (strlen($file_name) == 0 || strlen($file_name) > $MAX_FILENAME_LENGTH) {
    HandleError("Invalid file name");
    exit(0);
    }
    // 检测重名文件
    if (file_exists($save_path . $file_name)) {
    HandleError("File with this name already exists");
    exit(0);
    }
    // 检测后缀名
    $path_info = pathinfo($_FILES[$upload_name]['name']);
    $file_extension = $path_info["extension"];
    $is_valid_extension = false;
    foreach ($extension_whitelist as $extension) {
    if (strcasecmp($file_extension, $extension) == 0) {
    $is_valid_extension = true;
    break;
    }
    }
    if (!$is_valid_extension) {
    HandleError("Invalid file extension");
    exit(0);
    }
    // 保存文件
    if (!@move_uploaded_file($_FILES[$upload_name]["tmp_name"], $save_path.$file_name)) {
    HandleError("文件无法保存.");
    exit(0);
    }
    // 成功输出
    echo "File Received";
    exit(0);
    function HandleError($message) {
    header("HTTP/1.1 500 Internal Server Error");
    echo $message;
    }
    ?>
    以上代码就是实现文件上传之SwFUpload插件的全部内容，希望大家喜欢。
随便看

　

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更新时间：2025/5/22 22:38:19