Uploading errors

[Digrev]

Hi everybody i have two problems with my code first one i cant upload .png files to the img folder (no problem with the other extensions ) the other one "if file exist" part doesnt work i dont get the message "File alredy exist" after uploading second time Can you help plase

 

 

 

<form action="upload.php" method="post" enctype="multipart/form-data">

 

<input name="dosya" type="file">

<input name="submit" type="submit" value="Gonder">

 

 

</form>

 

 

<?php

 

$kaynak=$_FILES["dosya"]["tmp_name"];

$ad=$_FILES["dosya"]["name"];

$tur=$_FILES["dosya"]["type"];

$boyut=$_FILES["dosya"]["size"];

 

 

$hedef="./img";

if($tur == "image/jpeg" || $tur == "image/png" || $tur == "image/pjpeg" )

{

if(!file_exists($ad))

{

move_uploaded_file($kaynak,$hedef.'/'.$ad);

echo "ok";

}

else

echo "File already exist";

}

 

 

?>

[Digrev]

Please guys whats wrong  with this code

[Hypnos]

You script moves the image to ./img, but your file_exists() doesn't look in there.

[Digrev]

Hi my script moves thats right but the problem png files did you try to upload  any png files ?