Trying to upload/resize image

[christo16]

So the code lets me upload an image in full resolution and then resizes a thumbnail. It works with small images (less then 800 X 600) but with large images it does not do the thumbnail. It does not fail or give me an error, just doesn't make a thumbnail. Any ideas?

if ($_GET[a] == "up"){


$idir = "../../pictures/full/";   // Path To Images Directory 
$tdir = "../../pictures/thumbs/";   // Path To Thumbnails Directory 
$twidth = "125";   // Maximum Width For Thumbnail Images 
$theight = "100";   // Maximum Height For Thumbnail Images 

if (!isset($_GET['subpage'])) {   // Image Upload Form Below   ?> 
 <form method="post" action="gallery.php?a=up&subpage=upload" enctype="multipart/form-data"> 
 	<ul>
 		<li><p>Picture 1: <input type="file" name="imagefile" class="form"></p></li>

</ul>
 <input name="submit" type="submit" value="Upload!" class="form">  <input type="reset" value="Clear" class="form">
 </form>
 </div>
 </div>
 <div id="footer"></div>	
 </div>
<? } else  if (isset($_GET['subpage']) && $_GET['subpage'] == 'upload') {   // Uploading/Resizing Script 

//**************************************************************************
//Picture  One
   print 'Picture 1:<br>';
 $url = $_FILES['imagefile']['name'];   // Set $url To Equal The Filename For Later Use 

 if ($_FILES['imagefile']['type'] == "image/jpg" || $_FILES['imagefile']['type'] == "image/jpeg" || $_FILES['imagefile']['type'] == "image/pjpeg") { 
   $file_ext = strrchr($_FILES['imagefile']['name'], '.');   // Get The File Extention In The Format Of , For Instance, .jpg, .gif or .php 
   $copy = copy($_FILES['imagefile']['tmp_name'], "$idir" . $_FILES['imagefile']['name']);   // Move Image From Temporary Location To Permanent Location 

   if ($copy) {   // If The Script Was Able To Copy The Image To It's Permanent Location 
     print 'Image uploaded successfully.<br />';   // Was Able To Successfully Upload Image 

     $simg = imagecreatefromjpeg("$idir" . $url);   // Make A New Temporary Image To Create The Thumbanil From 
     $currwidth = imagesx($simg);   // Current Image Width 
     $currheight = imagesy($simg);   // Current Image Height 

     if ($currheight > $currwidth) {   // If Height Is Greater Than Width 
        $zoom = $twidth / $currheight;   // Length Ratio For Width 
        $newheight = $theight;   // Height Is Equal To Max Height 
        $newwidth = $currwidth * $zoom;   // Creates The New Width 
     } else {    // Otherwise, Assume Width Is Greater Than Height (Will Produce Same Result If Width Is Equal To Height) 
       $zoom = $twidth / $currwidth;   // Length Ratio For Height 
       $newwidth = $twidth;   // Width Is Equal To Max Width 
       $newheight = $currheight * $zoom;   // Creates The New Height 
     } 

     $dimg = imagecreate($newwidth, $newheight);   // Make New Image For Thumbnail 
     imagetruecolortopalette($simg, false, 256);   // Create New Color Pallete 
     $palsize = ImageColorsTotal($simg); 
     for ($i = 0; $i < $palsize; $i++) {   // Counting Colors In The Image 
      $colors = ImageColorsForIndex($simg, $i);   // Number Of Colors Used 
      ImageColorAllocate($dimg, $colors['red'], $colors['green'], $colors['blue']);   // Tell The Server What Colors This Image Will Use 
     } //End for if($copy)
      
     imagecopyresized($dimg, $simg, 0, 0, 0, 0, $newwidth, $newheight, $currwidth, $currheight);   // Copy Resized Image To The New Image (So We Can Save It) 
     imagejpeg($dimg, "$tdir" . $url);   // Saving The Image 
     imagedestroy($simg);   // Destroying The Temporary Image 
     imagedestroy($dimg);   // Destroying The Other Temporary Image 
     $full=  'full/'.basename( $_FILES['imagefile']['name']);
    $thumb= 'thumbs/'.basename( $_FILES['imagefile']['name']);
     $result = mysql_query('INSERT pictures SET url= "'.$full.'",thumb= "'.$thumb.'"'); //Adds picture info to DB
		if (!$result)
		{
			die ("Could not query the database: <br />". mysql_error());
		}

     print 'Image thumbnail created successfully.<br>';   // Resize successful 
   } else { 
     print '<font color="#FF0000">ERROR: Unable to upload image.</font>';   // Error Message If Upload Failed 
   } 
 } else { 
   print '<font color="#FF0000">ERROR: Wrong filetype (has to be a .jpg or .jpeg. Yours is ';   // Error Message If Filetype Is Wrong 
   print $file_ext;   // Show The Invalid File's Extention 
   print '.</font><br>'; 
 } 


}



} //Main End Tag

[Wildbug]

Do the file sizes of the larger images exceed the upload size limit?

[christo16]

thanks for the reply,

There shouldn't be an upload size limit becuase I running this script on a local server.

[phast1]

Yeah, I would check your phpinfo() for the limits on post_max_size, upload_max_filesize, and memory_limit.. Also check that max_execution_time and max_input_time are set to longer than you need for uploading the image.. I think that most browsers will also time out after a few minutes regardless of the php.ini settings, so make sure that your upload isn't taking that long..

 

And yes, PHP always has limits that are specified in the php.ini file regardless of whether you are running it locally or remotely.. Check your phpinfo() for the location of your php.ini file if you do not know where it is..

 

[christo16]

Thanks for the reply, I checked all those things and they seem alright, I just checked my php error log, does this make any sense:

"[15-May-2007 14:01:22] PHP Fatal error:  Allowed memory size of 8388608 bytes exhausted (tried to allocate 10240 bytes) in modules/gallery.php on line 80"

[phast1]

Yes, that is definitely the memory_limit default setting of 8MB causing that error.. I would check your phpinfo() output to make sure that the local value of memory_limit is something higher, such as "64M"..