Upload.

PHP kode 

 <?php
 /*************************************************
  * Max's Image Uploader
  *
  * Version: 1.0
  * Date: 2008-03-18
  *
  ****************************************************/
 class maxImageUpload {
     // Maximum upload size
     var $maxUploadSize = 10; // 10 Mb
     
     // Image sizes
     var $normalWidth   = 640;
     var $normalHeight  = 480;
     var $thumbWidth    = 128;
     var $thumbHeight   =  96;
     
     // Image quality
     var $imageQualityNormal = 3; //1:Poor ... 5:Very good
     var $imageQualityThumb  = 1; //1:Poor ... 5:Very good
    
     // Directories to store images
     var $baseDir     = '';
     var $originalDir = 'fotoalbumsbilleder/original';
     var $normalDir   = 'fotoalbumsbilleder/normal';
     var $thumbDir    = 'fotoalbumsbilleder/thumbnail';
     
     // File postfixes
     var $originalPrefix = '';
     var $normalPrefix   = '';
     var $thumbPrefix    = '';
     
     // Internal used variables
     var $error = '';
     var $maxMemoryUsage = 128;  // 128 Mb
     
     /**
      * Constructor to initialize class varaibles
      * The upload locations will be set to the actual 
      * working directory
      *
      * @return maxImageUpload
      */
     function maxImageUpload(){
        
        if (!file_exists($this->baseDir)) {
           if (!@mkdir($this->baseDir)){
              $this->baseDir = getcwd();
           }
        }
        
        $this->originalDir = $this->baseDir.DIRECTORY_SEPARATOR.$this->originalDir.DIRECTORY_SEPARATOR;
        if (!file_exists($this->originalDir)) {
           mkdir($this->originalDir);
        }
        $this->normalDir = $this->baseDir.DIRECTORY_SEPARATOR.$this->normalDir.DIRECTORY_SEPARATOR;
        if (!file_exists($this->normalDir)) {
           mkdir($this->normalDir);
        }
        $this->thumbDir = $this->baseDir.DIRECTORY_SEPARATOR.$this->thumbDir.DIRECTORY_SEPARATOR;
        if (!file_exists($this->thumbDir)) {
           mkdir($this->thumbDir);
        }
     }
 
     /**
      * This function sets the directory where to upload the file
      * In case of Windows server use the form: c:\\temp
      * In case of Unix server use the form: /tmp
      *
      * @param String Directory where to store the files
      */
     function setUploadBaseLocation($dir){
         $this->baseDir = $dir;
     }
     
     function showUploadForm($msg='',$error=''){
 ?>
        <div id="container">
             <div id="header"><div id="header_left"></div>
             <div id="header_main">Max's Image Uploader</div><div id="header_right"></div></div>
             <div id="content">
 <?php
 if ($msg != ''){
     echo '<p class="msg">'.$msg.'</p>';
 } else if ($error != ''){
     echo '<p class="emsg">'.$error.'</p>';
 
 }
 ?>
                 <form action="" method="post" enctype="multipart/form-data" >
                      <center>
                          <label>File:
                              <input name="myfile" type="file" size="30" />
                          </label>
                          <label>
                              <input type="submit" name="submitBtn" class="sbtn" value="Upload" />
                          </label>
                      </center>
                  </form>
              </div>
              <div id="footer"><a href="http://www.phpf1.com" target="_blank">Powered by PHP F1</a></div>
          </div>
 <?php
     }
     function uploadImage(){
         $result = true;
  $codelenght = 40;
  while(strlen($billedeid) < $codelenght) {
  $part = rand(1,3);
  if($part==1){$a=48;$b=57;}
  if($part==2){$a=65;$b=90;}
  if($part==3){$a=97;$b=122;}
  $billedeid .= chr(rand($a,$b));
  }     
         if (!isset($_POST['submitBtn'])){
             $this->showUploadForm();
         } else {
             $msg = '';
             $error = '';
             
             //Check image type. Only jpeg images are allowed
            // if ( (($_FILES['myfile']['type'])=='image/pjpeg') || (($_FILES['myfile']['type'])=='image/jpeg')) {
 $allowedFileTypes = "Tilladte billede formater: jpg, png, gif"; //Hvilke filer vil vi acceptere bliver uploadet?
 if ( ($_FILES['myfile']['type']) == 'image/jpeg' OR ($_FILES['myfile']['type']) == 'image/png'  OR ($_FILES['myfile']['type']) == 'image/gif') {
                // Check the output directories
                if ($this->checkDirs()){
                    $target_path = $this->originalDir . basename( $_FILES['myfile']['name']);
 
                    if(@move_uploaded_file($_FILES['myfile']['tmp_name'], $target_path)) {
                       $msg = basename( $_FILES['myfile']['name']).
                       " (".filesize($target_path)." bytes) was stored!";
                    } else{
                       $error = "Der opstod en fejl - forsøg venligst igen.";
                       $result = false;
                    }
 
                    // Store resized images
                    if ($result){
                       $this->setMemoryLimit($target_path);
 
                       // Create normal size image
                       $dest = $this->normalDir.$billedeid.$this->normalPrefix.basename($_FILES['myfile']['name']);
                       $this->resizeImage($target_path,$dest,$this->normalWidth,$this->normalHeight,$this->imageQualityNormal);
                       $msg .= "<br/>".basename($dest)." (".filesize($dest)." bytes) was stored!";
 
                       // Create thumbnail image
                       $dest = $this->thumbDir.$billedeid.$this->thumbPrefix.basename($_FILES['myfile']['name']);
                       $this->resizeImage($target_path,$dest,$this->thumbWidth,$this->thumbHeight,$this->imageQualityThumb);
                       $msg .= "<br/>".basename($dest)." (".filesize($dest)." bytes) was stored!";
                       
                    }
                 }
             } else {
                //echo "Only jpeg images are allowed!";
                $error = "".$allowedFileTypes."";
             }
 
             $this->showUploadForm($msg,$error);    
             
          $ip = htmlspecialchars($_SERVER["REMOTE_ADDR"]);
         $dato = date("d/m/Y H:i:s");
 
         $file_upload_query="INSERT into tp_fotoalbums (`brugernavn`,`file_name`,`file_size`,`file_type`,`dato`,`ipa`,`bigname`) VALUES('". $_SESSION['brugernavn'] ."','fotoalbumsbilleder/thumbnail/".$billedeid."".$_FILES['myfile']['name']."','".filesize($dest)."','".$file_type."','".$dato."','".$ip."','fotoalbumsbilleder/normal/".$billedeid."".$_FILES['myfile']['name']."'); ";
         mysql_query($file_upload_query);        
         }
     }
     
     function checkDirs(){
        $result = true;
        
        if (!file_exists($this->originalDir)){
           $this->error = "The target directory ($this->originalDir) doesn't exists!";
           $result = false;
        } else if (!is_writeable($this->originalDir)) {
           $this->error = "The target directory ($this->originalDir) is not writeable!";
           $result = false;
        } else if (!is_writeable($this->normalDir)) {
           $this->error = "The target directory ($this->normalDir) is not writeable!";
           $result = false;
        } else if (!is_writeable($this->normalDir)) {
           $this->error = "The target directory ($this->normalDir) is not writeable!";
           $result = false;
        } else if (!is_writeable($this->thumbDir)) {
           $this->error = "The target directory ($this->thumbDir) is not writeable!";
           $result = false;
        } else if (!is_writeable($this->originalDir)) {
           $this->error = "The target directory ($this->thumbDir) is not writeable!";
           $result = false;
        }
 
        return $result;      
     }
     
     function setMemoryLimit($filename){
        $width  = 0;
        $height = 0;
        $size   = ini_get('memory_limit');
        
        list($width, $height) = getimagesize($filename);
        $size = $size + floor(($width * $height * 4 * 1.5 + 1048576) / 1048576);
        
        if ($size > $this->maxMemoryUsage) $size = $this->maxMemoryUsage;
          
        ini_set('memory_limit',$size.'M');
 
     }
     
     function resizeImage($src,$dest,$new_width,$new_height,$quality){
        $width  = 0;
        $height = 0;
        
        list($width, $height) = getimagesize($src);
        
        $newImage = imagecreatetruecolor($new_width, $new_height);
        $oldImage = imagecreatefromjpeg($src);
        $this->fastimagecopyresampled($newImage, $oldImage, 0, 0, 0, 0, $new_width, $new_height, $width, $height, $quality);
 
        imagejpeg($newImage, $dest, 100);
     }
     
     // Function to resize images
     // Author: Tim Eckel - Date: 12/17/04 - Project: FreeRingers.net - Freely distributable.
     function fastimagecopyresampled (&$dst_image, $src_image, $dst_x, $dst_y, $src_x, $src_y, $dst_w, $dst_h, $src_w, $src_h, $quality = 3) {
        if (empty($src_image) || empty($dst_image)) { return false; }
        
        if ($quality <= 1) {
          $temp = imagecreatetruecolor ($dst_w + 1, $dst_h + 1);
          imagecopyresized ($temp, $src_image, $dst_x, $dst_y, $src_x, $src_y, $dst_w + 1, $dst_h + 1, $src_w, $src_h);
          imagecopyresized ($dst_image, $temp, 0, 0, 0, 0, $dst_w, $dst_h, $dst_w, $dst_h);
          imagedestroy ($temp);
        } elseif ($quality < 5 && (($dst_w * $quality) < $src_w || ($dst_h * $quality) < $src_h)) {
          $tmp_w = $dst_w * $quality;
          $tmp_h = $dst_h * $quality;
          $temp = imagecreatetruecolor ($tmp_w + 1, $tmp_h + 1);
          imagecopyresized ($temp, $src_image, $dst_x * $quality, $dst_y * $quality, $src_x, $src_y, $tmp_w + 1, $tmp_h + 1, $src_w, $src_h);
          imagecopyresampled ($dst_image, $temp, 0, 0, 0, 0, $dst_w, $dst_h, $tmp_w, $tmp_h);
          imagedestroy ($temp);
        } else {
          imagecopyresampled ($dst_image, $src_image, $dst_x, $dst_y, $src_x, $src_y, $dst_w, $dst_h, $src_w, $src_h);
        }
        return true;
    }
 
 }
 ?>