what's wrong with this codes?

hi guyz, why doesn't this codes work? it's an image upload ( and resize ) php page but it's doesnt upload

here it is,

<?php 
@ob_start();
$randomsayi = rand(1,11515454745484410); 
$file = $_FILES['file2'];

$useradi = $_POST['username'];
$usergadi = $_POST['gercekadi'];

$categories = $_POST['categories'];
$file_n = $_FILES['file2']['name'];
$file_name = "$file_n-$randomsayi.jpg";
$file_size = $_FILES['file2']['size'];
$file_temp = $_FILES['file2']['tmp_name'];
$bad_files = "0";
$max_size = "10048576"; // Maximum File Size (In Bytes) 
$extensions = ".gif$|.png$|.jpg$"; // Allowed File Extensions 
if ($file) { 
if ($file_size > $bad_files) {
if ($file_size <= $max_size) { 
if (ereg($extensions , $file_name)) { 
if (move_uploaded_file($file_temp, "files_uploaded/$myusername/$file_name")) { 

$maxWidth = 320;
$maxHeight = 240;


   $file = "files_uploaded/$myusername/$file_name";
   if(is_readable($file))
   {
      $sizeInfo = getimagesize($file);
      if($sizeInfo !== FALSE)
      {
         $imgTypes = array(            // IMAGETYPE_* for getimagesize() index 2
            IMAGETYPE_GIF  => IMG_GIF, // IMG_* for imagetype() check
            IMAGETYPE_JPEG => IMG_JPG,
            IMAGETYPE_PNG  => IMG_PNG,
            IMAGETYPE_WBMP => IMG_WBMP
         );
         if(isset($imgTypes[$sizeInfo[2]]) and
               (imagetypes() & $imgTypes[$sizeInfo[2]]))
         {
            $ratio = (($sizeInfo[0]/$sizeInfo[1]) > ($maxWidth/$maxHeight)) ?
                     $maxWidth / $sizeInfo[0] :
                     $maxHeight / $sizeInfo[1];
            $newWidth = $sizeInfo[0] * $ratio;
            $newHeight = $sizeInfo[1] * $ratio;
            $thumb = imagecreatetruecolor($newWidth, $newHeight);
            switch($sizeInfo[2])  // image type
            {
               case IMAGETYPE_GIF:
                  $source = imagecreatefromgif($file);
                  break;
               case IMAGETYPE_JPEG:
                  $source = imagecreatefromjpeg($file);
                  break;
               case IMAGETYPE_PNG:
                  $source = imagecreatefrompng($file);
                  break;
               case IMAGETYPE_WBMP:
                  $source = imagecreatefromwbmp($file);
                  break;
               default:
                  header("HTTP/1.0 404 Not Found");
                  exit;
            }
            imagecopyresampled($thumb, $source, 0, 0, 0, 0, $newWidth, $newHeight, $sizeInfo[0], $sizeInfo[1]);
            @header("Content-type: image/jpeg");
		$afilename = explode('.', $file);
		$uzan = $afilename[count($afilename) - 1];
	$ad   = substr(md5(rand(0,999999999)),-10);
	$yenisi = "".$ad.".".$uzan."";
	//veritabanina kayit edilecek yeni boyutlandirdigimiz fotonun yolu
	$file_name2 = "files_uploaded/$myusername/".$yenisi;
	imagejpeg($thumb,$file_name,100);

	//ilk upload ettigimiz yani boyutlandirmadan önceki fotoyu siliyoruz
	unlink("$file");

         }
      }
   }


$sql = "insert into $categories (foto1,foto1oy,categories,tanim,isim,uname,isimi) values ('http://www.picciz.com/$file_name2','0','$categories','$tanim','$isim','$useradi','$usergadi')";
$kayit = mysql_query($sql);
echo "<td valign=top width=350><center><img class='resssim' src='/files_uploaded/$myusername/$file_name' alt='' name='sa' id='sa' /><br><br></center></td>";
}else{ 
print "<font color=\"red\" font size=\"3\">System error!</font></P>\n"; 
} 
}else{ 
print "<font color=\"red\" font size=\"3\">unknown extension </font><p>\n";
print "File name: $file_name<p>\n";  
} 
}else{ 
print "<font color=\"red\" font size=\"3\">the file is too large</font><p>\n"; 
}
}else{
print "<font color=\"red\" font size=\"3\">File Must Be Greater Than 0 Byte's</font><p>\n";
}

} 
@ob_end_flush();
?>

Code (markup):

 

What happens when you try and upload a file? Does it say anything? Post the HTML of the upload form.

 

thanks for your reply but i just fixed it, maybe some1 needs it, the problem was

This code

	//veritabanina kayit edilecek yeni boyutlandirdigimiz fotonun yolu
	$file_name2 = "files_uploaded/$myusername/".$yenisi;
	imagejpeg($thumb,$file_name,100);

Code (markup):

must be like this

	//veritabanina kayit edilecek yeni boyutlandirdigimiz fotonun yolu
	$file_name2 = "files_uploaded/$myusername/".$yenisi;
	imagejpeg($thumb,$file_name2,100);

Code (markup):

it was only "$file_name" must be "$file_name2", it took my hours!

 

try this it might work.....