PHP 文件上传代码

<?php
// basic php file upload example
// http://www.php.cn/

if ($_POST['upload']){ //process uploaded file
    $uploadDir = '/domains/path-com/path/www_root/_crop/full-'; //file upload path
    $uploadFile = $uploadDir . $_FILES['uploadfile']['name'];
    echo "<pre>";
    if (move_uploaded_file($_FILES['uploadfile']['tmp_name'], $uploadFile) )
    {
        echo "File is valid, and was successfully uploaded. ";
        echo "Here's some more debugging info:\n";
    }
    else
    {
        echo "ERROR!  Here's some debugging info:\n";
        echo "remember to check valid path, max filesize\n";
		echo "$-POST-upload: ".$_POST['upload'];
    }
    echo "</pre>";
    
} else { //display upload form
?>
<form enctype="multipart/form-data" action="<?php echo $_SERVER['SCRIPT_NAME']?>" method="post">
    <input type="hidden" name="MAX_FILE_SIZE" value="1111024000">
    <br>
  <input name="uploadfile" type="file">
    <br>
    <input name= "upload" type="submit" value="Upload File">
</form>
<?php
}
?>