Resising ratio

[graham23s]

Hi Guys,

 

i have written this function to resize a .jpg, i understan all aspects of the code apart from how to keep the aspect ration (height wise) could anyone tell me how to work out the correct aspect ratio at all

 

code:

 

<?php
function resize_image($upload_directory, $new_image_name)
{
  // original image location //
  $original_image = $upload_directory;
  
  // set up a canvas my babies //
  $canvas_width = 65;
  $canvas_height = 65;
  
  // create the canvas //
  $canvas = imagecreatetruecolor($canvas_width, $canvas_height);
  
  // get the image height and width //
  list($image_width, $image_height) = getimagesize($upload_directory);
  
  // new sizes // 
  $new_image_width = 65;
  // STUCK HERE //
  
  // store original into memory //
  $original_image = imagecreatefromjpeg($original_image);
  
  // copy the original image onto the canvas canvas, original and top/left co-ordinates //
  imagecopyresampled($canvas, $original_image, 0,0,0,0, $new_image_width, $new_image_height, $image_width, $image_height);
  
  // thumbnail name //
  $new_thumbnail_name = "thumb-$new_image_name";
  
  // save the thumbnail in the thumbs folder //
  if(imagejpeg($canvas, "products/thumbnails/$new_thumbnail_name", 100))
  {
   return("$new_thumbnail_name");
  }
  
}
?>

 

thanks guys

 

Graham

[Daniel0]

Check out this post:

http://www.phpfreaks.com/forums/index.php/topic,191541.0.html

 

It might help you with that.

[graham23s]

Thanks daniel thats pretty good lol ill read up on the comments.

 

thanks mate

 

Graham