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php文件上传及错误代码总结

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May 25, 2016 pm 04:55 PM

本文章总结了关于php文件上传及错误代码的介绍，有需要学习的朋友可参考一下本文章。

上传操作代码

代码如下

复制代码

    if($_FILES['myfile']['error'] > 0) {      //判断文件是否可以成功上传到服务器，0表示上传成功
        echo 'Error: ';

        switch ( $_FILES['myfile']['error'] ) {
            case UPLOAD_ERR_OK:
                $response = 'There is no error, the file uploaded with success.';
                break;
            case UPLOAD_ERR_INI_SIZE:
                $response = 'The uploaded file exceeds the upload_max_filesize directive in php.ini.';
                break;
            case UPLOAD_ERR_FORM_SIZE:
                $response = 'The uploaded file exceeds the MAX_FILE_SIZE directive that was specified in the HTML form.';
                break;
            case UPLOAD_ERR_PARTIAL:
                $response = 'The uploaded file was only partially uploaded.';
                break;
            case UPLOAD_ERR_NO_FILE:
                $response = 'No file was uploaded.';
                break;
            case UPLOAD_ERR_NO_TMP_DIR:
                $response = 'Missing a temporary folder. Introduced in PHP 4.3.10 and PHP 5.0.3.';
                break;
            case UPLOAD_ERR_CANT_WRITE:
                $response = 'Failed to write file to disk. Introduced in PHP 5.1.0.';
                break;
            case UPLOAD_ERR_EXTENSION:
                $response = 'File upload stopped by extension. Introduced in PHP 5.2.0.';
                break;
            default:
                $response = 'Unknown error';
                break;
        }
        echo $response;


        exit;       //如果$_FILES['myfile']['error']大于0都是有错误，输出错误信息并退出程序
    }

     //获取上传文件的MIME类型中的主类型和子类型
    list($maintype,$subtype)=explode("/",$_FILES['myfile']['type']);

    if ($maintype=="text") {    //通过主类型限制不能上传文本文件，例如.txt .html .php等文件文件

        echo '问题: 不能上传文本文件。';
        exit;                //如果用户上传文本文件则退出程序

    }

    $upfile = './uploads/'.time().$_FILES['myfile']['name'];     //定义上传后的位置和新文件名

    if ( is_uploaded_file($_FILES['myfile']['tmp_name']) ) {     //判断是否为上传文件

        if ( !move_uploaded_file($_FILES['myfile']['tmp_name'], $upfile) ) {   //从移动文件
            echo '问题: 不能将文件移动到指定目录。';
            exit;
        }

    }else{

        echo '问题: 上传文件不是一个合法文件: ';
        echo $_FILES['myfile']['name'];
        exit;

    }

    echo '文件 : '.$upfile.' 上传成功, 大小为 : ' .$_FILES['myfile']['size'].'！
';   //如果文件上传成功则输出
?>

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