Home Backend Development PHP Tutorial PHP 文件上传进度条的两种实现方法的代码_php技巧

PHP 文件上传进度条的两种实现方法的代码_php技巧

May 17, 2016 am 09:38 AM
php File Upload progress bar

目前我知道的方法有两种,一种是使用PHP的创始人 Rasmus Lerdorf 写的APC扩展模块来实现(http://pecl.php.net/package/apc),另外一种方法是使用PECL扩展模块 uploadprogress实现(http://pecl.php.net/package/uploadprogress)我这里举两个分别实现的例子供参考,更灵活的应用根据自己需要来修改。

APC实现方法:

安装APC,参照官方文档安装,可以使用PECL模块安装方法快速简捷,这里不说明
配置php.ini,设置参数 apc.rfc1867=1 ,使APC支持上传进度条功能,在APC源码说明文档里面有说明
代码范例:

复制代码 代码如下:

if ($_SERVER['REQUEST_METHOD'] == 'POST') {  //上传请求 
    $status = apc_fetch('upload_' . $_POST['APC_UPLOAD_PROGRESS']); 
    $status['done'] = 1; 
    echo json_encode($status);  //输出给用户端页面里的ajax调用,相关文档请自己寻找 
    exit; 
} elseif (isset($_GET['progress_key'])) {   //读取上传进度 
    $status = apc_fetch('upload_'.$_GET['progress_key']); 
    echo json_encode($status); 
    exit; 
} else { 
    //其他代码,比如上传表单等 


uploadprogress 模块实现方法:

使用PECL模块安装方法安装该模块
php.ini里面设置 uploadprogress.file.filename_template = “/tmp/upd_%s.txt”
代码范例:
复制代码 代码如下:

if($_SERVER['REQUEST_METHOD']=='POST') { 
    if (is_uploaded_file($_FILES['upfile']['tmp_name'])) { 
        $upload_dir = 'your_path/'; 
        $ext        = strrchr($_FILES['video']['name'], '.'); 
        $sessid     = $_POST['UPLOAD_IDENTIFIER'] ; 
        $tmpfile    = $upload_dir . $sessid;  
        $sessfile   = $upload_dir . $sessid .$ext; 
        if (move_uploaded_file($_FILES['upfile']['tmp_name'],$tmpfile)) { 
            //上传成功 
        } else { 
            //上传失败 
    } else { 
        //上传错误 

} elseif (!empty($_GET['sessid'])) { 
    header("Expires: Mon, 26 Jul 1997 05:00:00 GMT"); 
    header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT"); 
    header("Cache-Control: no-store, no-cache, must-revalidate"); 
    header("Cache-Control: post-check=0, pre-check=0", false); 
    header("Pragma: no-cache"); 
    header("Content-Type:text/html;charset=UTF-8"); 

    $unique_id = $_GET['sessid']; 
    $uploadvalues = uploadprogress_get_info($unique_id); 

    if (is_array($uploadvalues)) { 
        echo json_encode($uploadvalues); 
    } else { 
        //读取进度失败,另外处理逻辑 
    } 

} else { 
    //显示上传表单 
}
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