Make thumbed images with fit to box aspect ration fucntion

[leocrawf]

I am working on a project in which i need to make thumbed images and maintain aspect ratio based on a set width and height. After searching the web i found examples that only helped me for one or the other need . So i combined both fucntionality into one, here is my function(this uses GD library to manipulate images):

function make_thumb($src, $thumbdirectory,$thumbedfile, $desired_width,$desired_height) {

  /* read the source image */
  
  $source_image = imagecreatefromjpeg($src);
  $width = imagesx($source_image);
  $height = imagesy($source_image);
  
 
  //calculate aspect ratio
   if ($width > $height) {
    $percentage = ($desired_width / $width);
   } else {
     $percentage = ($desired_height / $height);
   }

   $desired_width = round($width * $percentage);
   $desired_height = round($height * $percentage);
  
  /* create a new, "virtual" image */
  $virtual_image = imagecreatetruecolor($desired_width, $desired_height);
  
  /* copy source image at a resized size */
  imagecopyresampled($virtual_image, $source_image, 0, 0, 0, 0, $desired_width, $desired_height, $width, $height);
  
  //chk if destination exist and make it if not
  if(!is_dir($thumbdirectory)){
    mkdir($thumbdirectory, 0755);
	chmod($thumbdirectory, 0755);
  
   /* create the physical thumbnail image to its destination */
    imagejpeg($virtual_image, $thumbedfile);
  
  }  else {
	chmod($thumbdirectory, 0755);
	   
	   
  
     /* create the physical thumbnail image to its destination */
    imagejpeg($virtual_image, $thumbedfile);
	
	
	}
	
	
	
}

[owen]

Cool, very elegant.

Only difference in mine is this;

if(is_resource(@imageCreateTrueColor(100,100))) { //check gd library version
	$desImg = imageCreateTrueColor($thumbWidth,$thumbHeight);
	imageCopyResampled($desImg, $srcImg, 0, 0, 0, 0, $thumbWidth, $thumbHeight, $srcWidth, $srcHeight);
	} else {
		//version < 2.0
		$desImg = imageCreate($thumbWidth,$thumbHeight);
		imageCopyResized($desImg, $srcImg, 0, 0, $srcX, $srcY, $thumbWidth, $thumbHeight, $thumbWidth, $thumbHeight);
	}

Which probably is pointless since everybody has upgraded servers now.