cannot set right charset when uploading files - apache2

Question

Please be patient and check this problem.
I wrote some simple PHP code for uploading images.
Here is the code (snippets)
<?php
header('Content-Type: text/plain; charset=utf-8');
//set encoding for prepared statements
$dbh->exec("SET NAMES UTF8");
$dbh->query('SET NAMES UTF8');
//check if file is actually an image etc.
//send image to "upload" folder
move_uploaded_file($_FILES["file"]["tmp_name"],"upload/" . $_FILES["file"]["name"]);
//save to the database a string like "upload/myImage.jpg", so I can render it on the site later
$stu = $dbh->prepare("UPDATE multi SET m_place=:name WHERE m_id = :id");
$stu->bindParam(':name', $n, PDO::PARAM_STR);
$n= "upload/".$_FILES["file"]["name"];
$stu->execute();
If the name of the image is in English, everything is fine. If is in Greek, it saved ok in the database , but not in the folder. In the database I see χωρις τιτλο.jpg (which is right) and in the folder χωΟΞ―Ο‚ τίτλο.jpg which is wrong.
I've tried everything and cannot fix this. To get the right titles in the folder.
The encoding of the database (postgreSQL 9.1) is UTF8, the Collation and the Character Type are Greek_Greece.1235. The collaction in table's column which I save the image's title is pg_catalog."C".
I use DreamWeaver. The file that handles the uploads is a php file. Encoding is utf8, Unicode Normalization Form is C and the Include Unicode Signature (BOM) is unchecked.
The default language is Greek in Region and Language in the control panel. (Windows 7 Home Premium)
The encoding of the browser is utf8
I also use Apache 2.2.22. Is it Apache's fault? Or its the php file? Or the database?
I dont know what else to do...What am I missing? Please please please advice

Answer 1

This seems to be a StackOverflow issue and not related to ServerFault. However, you should take a look at this post:
For naming files in UTF-8:
Can a PHP file name (or a dir in its full path) have UTF-8 characters?
For writing files in UTF-8:
How to write file in UTF-8 format?

Answer 2

Turns out , I had not tried everything.
Thanks to this I found the solution.
It has to do with PHP and how "PHP filesystem functions can only handle characters that are in system codepage"
So I used the iconv function.
I changed the code like so
move_uploaded_file($_FILES["file"]["tmp_name"],"upload/" . iconv('UTF-8', 'Windows-1253',$_FILES["file"]["name"]));

Answer 3

For the application using japanese, the code page is cp932
This can be comfirm by using chcp command in commandline.
Sample Code
$fullPath = $uploadFolderPath."\\".iconv("utf-8", "cp932", $fileName);
move_uploaded_file($this->request->data["file_name"]['tmp_name'], $fullPath);