PHP之上传文件

<?php

$uploaddir='/var/www/uploads/';
$uploadfile=$uploaddir. $_FILES['userfile']['name'];
print "<pre>";
if(move_uploaded_file($_FILES['userfile']['tmp_name'], $uploadfile)){
print "上传成功！ 如下是调试信息：\n";
print_r($_FILES);
}
else{
print "上传失败！ 如下是调试信息：\n";
print_r($_FILES);
}
print "</pre>";
?>