PHP文件上传部分上传错误答案

【问题标题】：PHP File Upload Partial Upload ErrorPHP文件上传部分上传错误
【发布时间】：2015-09-15 08:33:55
【问题描述】：

我遇到了一个关于文件上传的问题。我正在尝试将 JPG、JPEG 或 PNG 的图像上传到文件夹。我正在阅读一本书并按照他们的示例进行操作，我的代码现在是这样的：

    <!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" xml:lang="en" lang="en">
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
    <title>Upload an Image</title>
    <style type="text/css" title="text/css" media="all">
        .error {
            font-weight: bold;
            color: #C00;
        }
    </style>
</head>
<body>
<?php # Script 11.2 - upload_image.php

// Check if the form has been submitted:
if ($_SERVER['REQUEST_METHOD'] == 'POST') {

    // Check for an uploaded file:
    if (isset($_FILES['upload'])) {

        // Validate the type. Should be JPEG or PNG.
        $allowed = array ('image/pjpeg', 'image/jpeg', 'image/JPG', 'image/X-PNG', 'image/PNG', 'image/png', 'image/x-png');
        if (in_array($_FILES['upload']['type'], $allowed)) {

            // Move the file over.
            if (move_uploaded_file ($_FILES['upload']['tmp_name'], "upload/{$_FILES['upload']['name']}")) {
                echo '<p><em>The file has been uploaded!</em></p>';
            } // End of move... IF.

        } else { // Invalid type.
            echo '<p class="error">Please upload a JPEG or PNG image.</p>';
        }

    } // End of isset($_FILES['upload']) IF.

    // Check for an error:
    if ($_FILES['upload']['error'] > 0) {
        echo '<p class="error">The file could not be uploaded because: <strong>';

        // Print a message based upon the error.
        switch ($_FILES['upload']['error']) {
            case 1:
                print 'The file exceeds the upload_max_filesize setting in php.ini.';
                break;
            case 2:
                print 'The file exceeds the MAX_FILE_SIZE setting in the HTML form.';
                break;
            case 3:
                print 'The file was only partially uploaded.';
                break;
            case 4:
                print 'No file was uploaded.';
                break;
            case 6:
                print 'No temporary folder was available.';
                break;
            case 7:
                print 'Unable to write to the disk.';
                break;
            case 8:
                print 'File upload stopped.';
                break;
            default:
                print 'A system error occurred.';
                break;
        } // End of switch.

        print '</strong></p>';

    } // End of error IF.

    // Delete the file if it still exists:
    if (file_exists ($_FILES['upload']['tmp_name']) && is_file($_FILES['upload']['tmp_name']) ) {
        unlink ($_FILES['upload']['tmp_name']);
    }

} // End of the submitted conditional.
?>

<form enctype="multipart/form-data" action="upload_image.php" method="post">

    <input type="hidden" name="MAX_FILE_SIZE" value="524288" />

    <fieldset><legend>Select a JPEG or PNG image of 512KB or smaller to be uploaded:</legend>

        <p><b>File:</b> <input type="file" name="upload" /></p>

    </fieldset>
    <div align="center"><input type="submit" name="submit" value="Submit" /></div>

</form>
</body>
</html>

奇怪的是，我已经创建了上传文件夹并设置了相关权限，我可以完美上传PNG文件，但是当我尝试上传JPG时，我不断收到“文件仅部分上传”的错误" 根据 $errors 数组输出。 有问题的文件不大，大约 60-80 Kb。 我是新手，只是想知道上面的代码是否有任何明显错误会导致此错误，或者是否是服务器？

我还配置了我的 php.ini 并设置了 file_uploads。我在 Ubuntu 上使用 Nginx 运行 PHP 5.6。

感谢任何帮助。谢谢！

【问题讨论】：

如果PNG上传OK，JPEG应该没有问题。看来服务器的图片大小有问题。
我同意，文件大小可能是这里的问题。请检查上传的其他 JPG 文件，您使用的可能以某种方式损坏。并尝试将此 MIME 类型添加到您的列表 - “image/jp2”。

标签： php file-upload nginx

【解决方案1】：

这可能是因为in_array 区分大小写。而是使用 strtolower() 并将您的 mime 类型设为小写。

$allowed = array ('image/pjpeg', 'image/jpeg', 'image/jpg', 'image/x-png', 'image/png');
if (in_array(strtolower($_FILES['upload']['type']), $allowed)) {
    ...

【讨论】：

【解决方案2】：

<?php

 if($_FILES['upload']['name'] != ''){
     $allowed_ext = array("gif","jpg","jpeg","png","GIF","JPG","JPEG","PNG"); 
     $filename = $_FILES['upload']['name'];
     $ext = end(explode(".", $filename));
     if(!in_array($ext,$allowed_ext)){echo '<p class="error">Please upload a JPEG or PNG image.</p>';}
     else{
          $rand1 = time();
          $image_name = $rand1.'.'.$ext;            //for rename image name
          $path = "upload/".$image_name;            //for image path
          move_uploaded_file($_FILES["upload"]["tmp_name"], $path);
     }
}

【讨论】：