set charset when saving files with php - php

Question

I created a simple code for uploading pictures to a folder, with PHP.
On the server side I have
<?php
header('Content-Type: text/plain; charset=utf-8');
//check if file is actually an image etc.
//if is an image, send it 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();
The problem?
If the name of the image is in english in the folder I see a "myImage01.jpg" and in the database also "upload/myImage01.jpg". But, if the name of the image is in greek in the folder I see "χωΟΞ―Ο‚ τίτλο.jpg" and in the db "upload/χωΟΞ―Ο‚ τίτλο.jpg".Which is wrong. Insted of χωΟΞ―Ο‚ τίτλο I should get "χωρις τιτλο" (thats greek for "no title" btw). So , I guess charset problem?
How do I fix this?
Thanks in advance

Answer 1

It sounds like your database doesn't have the correct collation. Make sure the tables/columns are using utf8_general_ci for their collation.
Also extremely important when handling UTF8 is to use the following two MySQL lines for GET requests...
SET time_zone = '+00:00'
SET CHARACTER SET 'utf8'
...and when you have a POST request use the following two...
SET time_zone = '+00:00'
SET NAMES 'utf8'
These will help ensure that UTF8 characters are maintained correctly.

Answer 2

Finally, I figure out that "PHP filesystem functions can only handle characters that are in system codepage". Thanks to this I solve my problem.
I used the iconv function
So I changed the move_uploaded_file line like so
move_uploaded_file($_FILES["file"]["tmp_name"],"upload/" . iconv('UTF-8', 'Windows1253',$_FILES["file"]["name"]));