PHP上传问题

Question

我的代码：

if(isset($_FILES['image'])){
    $allowedExts = array('jpg', 'gif', 'png');
    $extension = end(explode('.', $_FILES['image']['name']));
    if(in_array($extension, $allowedExts)){
        if($_FILES['image']['size'] < 50000){
            if ($_FILES['image']['error'] > 0){
                $uploaderror = $_FILES['image']['error'];
            }else{
                $uploaderror = 'FALLBACK ERROR';
                if(file_exists('..images/'.$_FILES['image']['name'])){
                    $uploaderror = 'The file <strong>'.$_FILES['image']['name'].'</strong> already exists in the images directory.';
                }else{
                    move_uploaded_file($_FILES['file']['tmp_name'], '..images/'.$_FILES['file']['name']);
                    $uploadsuccess = $_FILES['file']['name'];
                }
            }
        }else{$uploaderror = 'The image is too large.';}
    }else{$uploaderror = 'Only images (.jpg, .png, and .gif) are allowed.';}
}else{$uploaderror = 'No attempt';}

输出： $uploaderror返回FALLBACK ERROR，未设置$uploadsuccess。该文件没有出现在speicifed目录中，我无法在服务器上找到它。请告诉我我做错了什么。谢谢！

Answer 1

您在/之后和..之前错过images，要解决此问题，请更改此信息：

move_uploaded_file($_FILES['file']['tmp_name'], '..images/'.$_FILES['file']['name']);

以下内容：

move_uploaded_file($_FILES['file']['tmp_name'], '../images/'.$_FILES['file']['name']);

通过终端运行代码，您将得到以下响应：

  

.. images：没有这样的文件或目录

修改

我找到了另一个忘记了/的地方，那是在file_exists()支票中。

我也清理了你的代码，使其更具可读性：

<?php
$errors = array();
$allowedExts = array('jpg', 'gif', 'png');
$extension = pathinfo($_FILES['image']['name'], PATHINFO_EXTENSION);
if(!isset($_FILES['image'])){
    $errors[] = "No attempt.";
}
if(in_array($extension, $allowedExts)){
    $errors[] = "Only images (.jpg, .png, and .gif) are allowed.";
}
if($_FILES['image']['size'] > 50000){
    $errors[] = "The image is too large.";
}
if ($_FILES['image']['error'] <= 0){
    $errors[] = $_FILES['image']['error'];
}
if(file_exists('../images/'.$_FILES['image']['name'])){
    $errors[] = 'The file <strong>'.$_FILES['image']['name'].'</strong> already exists in the images directory.';
}

// No errors found!
if(count($errors) == 0){
    move_uploaded_file($_FILES['file']['tmp_name'], '../images/'.$_FILES['file']['name']);
    $uploadsuccess = $_FILES['file']['name'];
}