如果不存在，则创建目录，否则移动文件 - Create directory if not exists else move file

Create directory if not exists else move file

我有以下代码上传文件：

<?php
//set the image size in mb
$max_upload_size='10';
$MAXIMUM_FILESIZE = $max_upload_size * 1024 * 1024;
get_current_user();
global $current_user;
$uploaddir = './uploads/file/'.$current_user->user_login.'/'; 
$file = $uploaddir . basename($_FILES['uploadfile']['name']); 
if ($_FILES['uploadfile']['size']<$MAXIMUM_FILESIZE) {
if (move_uploaded_file($_FILES['uploadfile']['tmp_name'], $file)) { 
  echo "success"; 
} else {
    echo "error";
}
}else{
    echo"size_error";
}
?>

如果user_login已经存在于/uploads/file/目录下，这很好用。如果基于变量 $current_user->user_login 的目录不存在，如何创建该目录？如果存在，则继续下一个代码。

从 http://nz.php.net/manual/en/function.move-uploaded-file.php#105026：

目标目录必须存在;move_uploaded_file（）不会自动为您创建它。

只需使用is_dir和mkdir.

<?php
//set the image size in mb
$max_upload_size='10';
$MAXIMUM_FILESIZE = $max_upload_size * 1024 * 1024;
global $current_user;
$current_user = get_current_user();
$uploaddir = './uploads/file/'.$current_user->user_login.'/';
if (!is_dir($uploaddir) && !mkdir($uploaddir)){
  die("Error creating folder $uploaddir");
}
$file = $uploaddir . basename($_FILES['uploadfile']['name']); 
if ($_FILES['uploadfile']['size']<$MAXIMUM_FILESIZE) {
if (move_uploaded_file($_FILES['uploadfile']['tmp_name'], $file)) { 
  echo "success"; 
} else {
    echo "error";
}
}else{
    echo"size_error";
}
?>

  <?php
//set the image size in mb
$max_upload_size='10';
$MAXIMUM_FILESIZE = $max_upload_size * 1024 * 1024;
get_current_user();
global $current_user;
if(!is_dir('./uploads/file/'.$current_user->user_login))
{
   mkdir('./uploads/file/'.$current_user->user_login);
}
$uploaddir = './uploads/file/'.$current_user->user_login.'/'; 
$file = $uploaddir . basename($_FILES['uploadfile']['name']); 
if ($_FILES['uploadfile']['size']<$MAXIMUM_FILESIZE) {
if (move_uploaded_file($_FILES['uploadfile']['tmp_name'], $file)) { 
  echo "success"; 
} else {
    echo "error";
}
}else{
    echo"size_error";
}
    ?>

或者在初始化$updloaddir后，在 is_dir() 和 mkdir() 中添加带有$uploaddir参数的 if 语句。