Thumbnail IE

Código :

<? 

   if(isset($_POST['submit'])){
      
      //here we set what file types we want to accept
      //specifying only what file extensions you want is a bad idea
      //it won't check the content type. 
      $acceptedfiletypes = array('image/jpeg', 'image/gif', 'image/png', 'image/jpg');
      $filetype = $_FILES['srcimage']['type'];
      
      //next we check if the file uploaded is in the list above
      //if not then we set an error
      if(in_array($filetype, $acceptedfiletypes)){
         
         //find our max size, if none, set one
         if(round($_POST['maxdimensions']) > 0){
            $maxsize = $_POST['maxdimensions'];
         } else {
            $maxsize = 100;
         }
         
         //Now we make a unique name for the file
         //So that they don't overwrite each other.
         $tmppath = 'C:/xampp/htdocs/Auto/tmp/';
         $thumbspath = 'C:/xampp/htdocs/Auto/thumbs/';
         $urltothumbs = 'http://localhost/auto/thumbs/';
         $filename = strtolower(md5((rand() * time()).$_SERVER['REMOTE_ADDR']).strrchr($_FILES['srcimage']['name'], '.'));
         
         //Now that the file has been handled by your webserver
         //it has been placed in a temporary location
         //we need to move it to our working directory so we can thumbnail it
         move_uploaded_file($_FILES['srcimage']['tmp_name'], $tmppath.$filename);
         
         //now we make sure that everything is there, just gives us piece of mind
         if(file_exists($tmppath.$filename)){
            //now lets thumbnail it!
            //This sets our canvas, a jpg, gif or png canvas
            //depending on what was uploaded
            switch ($filetype){
               case 'image/jpeg':
                  $srcimage = imagecreatefromjpeg($tmppath.$filename);
                  break;
               case 'image/gif':
                  $srcimage = imagecreatefromgif($tmppath.$filename);
                  break;
               case 'image/png':
                  $srcimage = imagecreatefrompng($tmppath.$filename);
                  break;
               case 'image/jpg':
                  $srcimage = imagecreatefrompng($tmppath.$filename);
                  break;
               default:
                  $srcimage = imagecreatefromjpeg($tmppath.$filename);
            }
            
            //next lets find out the dimensions of the original image
            //that way we can calculate ratios later on
            $srcimagex = imagesx($srcimage);
            $srcimagey = imagesy($srcimage);
            
            //next we will see if we need to reduce the height at most 
            //or the width depending which is bigger
            //Also make sure that the image, either width or height is greater
            //than the max size, we don't want to imcrease the image size
            if($srcimagex > $maxsize || $srcimagey > $maxsize){
               if($srcimagex > $srcimagey){
                  $ratio = $maxsize / $srcimagex;
               } else {
                  $ratio = $maxsize / $srcimagey;
               }
            
            
               //next calculate the size of the thumbnail
               $thumbwidth = $srcimagex * $ratio;
               $thumbheight = $srcimagey * $ratio;
            } else {
               $thumbwidth = $srcimagex;
               $thumbheight = $srcimagey;
            }

            //lets create a thumbnail canvas now
            $thumbnail = imagecreatetruecolor($thumbwidth, $thumbheight);
            
            //now lets resize the original to go onto the thumbnail canvas
            imagecopyresampled($thumbnail, $srcimage, 0, 0, 0, 0, $thumbwidth, $thumbheight, $srcimagex, $srcimagey);
            $success = imagejpeg($thumbnail, $thumbspath.$filename, 75);
            
            //all done so clean up the tmp directory. Big images insane :-o
            unlink($tmppath.$filename);
         }
      } else {
         //This file was never an image, AND WILL NEVER BE AN IMAGE!
         echo 'File is not an image! Don\'t waste my time!';
      }
   }
   
?>
<form name="thumbnail" method="post" enctype="multipart/form-data">
   File: <input type="file" name="srcimage" /><br />
   Max Dimensions: <input type="text" name="maxdimensions" /> (optional)<br />
   <input type="submit" name="submit" value="upload" />
</form>
<?php
   //now that it was a success we can link our friends to the image!
   if($success == true){
?>
   <img src="<?php echo 'thumbs/'.$filename; ?>" /><br />
   Link: <input type="text" value="<?php echo $urltothumbs.$filename; ?>" />
<?
   }
?>

else {
         //This file was never an image, AND WILL NEVER BE AN IMAGE!
         echo 'File is not an image! Don\'t waste my time!';
      }