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[atholon]

Hi there,

I wrote a PHP class to crop images using the gd library...works fine on my local server but it appears my host has a smaller memory limit...any ideas of how to work around it? It seems I cannot upload any images larger than 300k with this cropping class.

This is the error I get:

Fatal error: Allowed memory size of 33554432 bytes exhausted (tried to allocate 2048 bytes) in /home/digitalh/public_html/includes/ImageCropper.php on line 124

Warning: Unknown: Your script possibly relies on a session side-effect which existed until PHP 4.2.3. Please be advised that the session extension does not consider global variables as a source of data, unless register_globals is enabled. You can disable this functionality and this warning by setting session.bug_compat_42 or session.bug_compat_warn to off, respectively. in Unknown on line 0

The class is sort of long:

<?php 
class ImageCropper
{
  var $mediumWidth, $mediumHeight, $resizeWidth, $resizeHeight, $theImage, $width, $height, $newWidth, $newHeight, $imageType, $thumbSize, $error; 

  function ImageCropper()
  {
    $this->mediumWidth = 275;
    $this->mediumHeight = 200;  

    $this->resizeWidth = 325;
    $this->resizeHeight = 250;
    $this->error = null;
  }  // Constructor
  
  function makeThumb($image, $iName, $iSize=110)     // Thumbnails are square so there are only three params
  {    
    $this->thumbSize = $iSize;
    
    list($this->width,$this->height, $this->imageType) = getimagesize($image);        
    
    if($this->generateImageFromType($image))
    {    
      if ($this->width > $this->height)
      {  
        $this->resizeWidth = $this->thumbSize + 100;
        $this->makeLandscape();
      }
      else if ($this->height > $this->width)         
      {    
        $this->makePortrait();
        $this->resizeHeight = $this->thumbSize + 100;
      }
      else
      {
        $this->resizeWidth = $this->thumbSize + 100;
        $this->makeLandscape();
      }
      
      if ($this->width > $this->resizeWidth || $this->height > $this->resizeHeight)
      {
          if($this->imageType != IMAGETYPE_GIF)
          {
            $tempImage = imagecreatetruecolor( $this->newWidth, $this->newHeight );
            $temp = imagecreatetruecolor( $this->thumbSize, $this->thumbSize);
          }
          else
          {
             $tempImage = imagecreate( $this->newWidth, $this->newHeight );
             $temp = imagecreate( $this->thumbSize, $this->thumbSize);          
          }
          
          imagecopyresampled( $tempImage, $this->theImage, 0, 0, 0, 0, $this->newWidth, $this->newHeight, $this->width, $this->height );          
          imagecopy( $temp, $tempImage, 0, 0,($this->newWidth/2)-($this->thumbSize/2),($this->newHeight/2)-($this->thumbSize/2), $this->newWidth, $this->newHeight ); 
          $this->renderImage($temp, $iName);           
          imagedestroy( $temp );
          imagedestroy( $tempImage );
      }      
      else
      {
          if($this->imageType != IMAGETYPE_GIF)
          {
            $temp = imagecreatetruecolor( $this->thumbSize, $this->thumbSize);
          }
          else
          {
             $tempImage = imagecreate( $this->newWidth, $this->newHeight );
             $temp = imagecreate( $this->thumbSize, $this->thumbSize);          
          }
          imagecopy( $temp, $this->theImage, ($this->thumbSize/2)-($this->width/2), ($this->thumbSize/2)-($this->height/2),0,0, $this->width, $this->height ); // resize to width
          $this->renderImage($temp, $iName); 
          imagedestroy( $temp ); 
      }
    }
    else
      echo $this->error;
       
  } // End Make Thumb

  function makeOtherSize($image, $iName, $iWidth=275, $iHeight=200)
  {
    $this->mediumWidth = $iWidth;
    $this->mediumHeight = $iHeight;
    
    $this->resizeWidth = $iWidth + 50;
    $this->resizeHeight = $iHeight + 50;    
   
    list($this->width,$this->height, $this->imageType) = getimagesize($image);     
    if($this->generateImageFromType($image))
    {
         
      if ($this->width > $this->height)
      {       
        $this->makeLandscape();
      }
      else if ($this->height > $this->width)         
      {    
        $this->makePortrait();
      }
      else
      {
        $this->makeLandscape();
      }
      
      if ($this->width > $this->resizeWidth || $this->height > $this->resizeHeight)
      {
          if($this->imageType != IMAGETYPE_GIF)
          {          
            $tempImage = imagecreatetruecolor( $this->newWidth, $this->newHeight );
            $temp = imagecreatetruecolor( $this->mediumWidth, $this->mediumHeight);                                                       
          }
          else
          {
            $tempImage = imagecreate( $this->newWidth, $this->newHeight );
            $temp = imagecreate( $this->mediumWidth, $this->mediumHeight);
          }
          imagecopyresampled( $tempImage, $this->theImage, 0, 0, 0, 0, $this->newWidth, $this->newHeight, $this->width, $this->height );
          imagecopy( $temp, $tempImage, 0, 0,($this->newWidth/2)-($this->mediumWidth/2),($this->newHeight/2)-($this->mediumHeight/2), $this->newWidth, $this->newHeight ); 
          
          $this->renderImage($temp, $iName);           
         
          imagedestroy( $temp );
          imagedestroy( $tempImage );
      }      
      else
      {      
          if($this->imageType != IMAGETYPE_GIF)
          {             
            $temp = imagecreatetruecolor( $this->mediumWidth, $this->mediumHeight);
          }
          else
          {
            $temp = imagecreate( $this->mediumWidth, $this->mediumHeight);          
          }
            imagecopy( $temp, $this->theImage, ($this->mediumWidth/2)-($this->width/2), ($this->mediumHeight/2)-($this->height/2),0,0, $this->width, $this->height ); // resize to width
            $this->renderImage($temp, $iName); 
            imagedestroy( $temp );
            imagedestroy( $tempImage );
            
       }
   }
   else
   {   
      echo $this->error;
   }  
  }
   
  function generateImageFromType($toBeMade)
  {
   switch($this->imageType)
   {
     case IMAGETYPE_GIF:  
        $this->theImage = imagecreatefromgif($toBeMade) or die("Error: Cannot find image!");
        return true; 
        break;
     case IMAGETYPE_JPEG:
        $this->theImage = imagecreatefromjpeg($toBeMade) or die("Error: Cannot find image!");
        return true;    
        break;
     case IMAGETYPE_PNG:
        $this->theImage = imagecreatefrompng($toBeMade) or die("Error: Cannot find image!");
        return true;     
        break;
    default:
      $this->error("This image type is not allowed:".$this->imageType);
      return false;
      break;
   }  
  }
  
  function renderImage($theImage,$iName)
  {
     switch ($this->imageType)
     {
      case IMAGETYPE_JPEG:
        imagejpeg($theImage, $iName); 
        break;   
      case IMAGETYPE_GIF: 
        imagegif($theImage, $iName);
        break;   
      case IMAGETYPE_PNG:
        imagepng($theImage, $iName);
        break;   
      default:
        break;     
     } 
  }
  function makeLandscape()
  {
    if ($this->width > $this->resizeWidth)
    {
         $ratio = $this->exceededAspectRatio();
         if ($ratio == true)
         {
            $this->newHeight = $this->resizeHeight;
            $this->newWidth = ceil( $this->newHeight*($this->width/$this->height));
            echo("got here");
         }
         else
         {          
            $this->newWidth = $this->resizeWidth;
            $this->newHeight = ceil( $this->newWidth*($this->height/$this->width));
         }
    }
    else
    {
        $this->newWidth = $this->width;
        $this->newHeight = $this->height;
    }
  } // End Make LandScape
  
  function makePortrait()
  {
    if ($this->height > $this->resizeHeight)
    {
         $ratio = $this->exceededAspectRatio();
         if ($ratio == true)
         {
            $this->newHeight = $this->resizeHeight;
            $this->newWidth = ceil( $this->newHeight*($this->width/$this->height));
            echo("got here");
         }
         else
         {          
            $this->newHeight = $this->resizeHeight;
            $this->newWidth = ceil( $this->newHeight*($this->width/$this->height));
         }   
    }
    else
    {
        $this->newWidth = $this->width;
        $this->newHeight = $this->height;
    }     
  }

  function exceededAspectRatio()
  {
    if ($this->width > $this->height)
    {
       if ($this->width / $this->height > 2)
       return true;        
    }
    else
    {
       return false;
    }
    if ($this->height > $this->width)
    {
       if ($this->height / $this->width > 2)  
       return true;       
    }
    else
    {
       return false;
    }
  }
}

?>