Question

这是我从devshed获得的脚本。它在Opera和其他（非IE）中运行良好。我的问题是：如果没有$_FILES['userfile']['name'] & $_FILES['userfile']['tmp_name']，这个脚本如何工作？

<?php
    class FileUploader
    {
    private $uploadFile;
    private $name;
    private $tmp_name;
    private $type;
    private $size;
    private $error;
    private $allowedTypes=array
    ('image/jpeg','image/gif','image/png','text/plain','application/ms-word');

    public function __construct($uploadDir="./uploadfl/")
    {
    if(!is_dir($uploadDir)){
    throw new Exception('Invalid upload directory.');
    }

    if(!count($_FILES))
    {
    throw new Exception('Invalid number of file upload parameters.');
    }

    foreach($_FILES['userfile'] as $key=>$value)
    {
    $this->{$key}=$value;
    }

    if(!in_array($this->type,$this->allowedTypes))
    {
    throw new Exception('Invalid MIME type of target file.');
    }

    $this->uploadFile=$uploadDir.basename($this->name); 

    }
    // upload target file to specified location

    public function upload(){
    if(move_uploaded_file($this->tmp_name,$this->uploadFile)){
    return true;
    }


    }
    }
    ?>

    <?php
      if($_POST['send']){
    //require_once 'fileuploader.php';
    $fileUploader=new FileUploader();
    if($fileUploader->upload()){
    echo 'Target file uploaded successfully!';
    }
    }
?>

Answer 1

回答你的问题（如果没有$ _FILEs ['userfile'] ['name']＆amp; $ _FILEs ['userfile'] ['tmp_name']），这个脚本如何工作：没有它它确实有效，因为数组键在此处被指定为属性：

$this->{$key}=$value;

因此，现在可以将其称为

，而不是$ _FILES ['userfile'] ['tmp_name']。

$this->tmp_name

您已经回复了为什么它可能无法在所有浏览器中使用。

希望有所帮助，斯蒂芬

Php OOps文件上传工作脚本

1 个答案: