thumbnail when upload image

[Stefan Oliwa]

Stop working after updates;
One of our staff member report to me bug: problem with images in IE11.

I didn't notice that in firefox or chrome because images was resize to width and height set in img tag => <img src="some image" width="300" height="180" alt.. >
but physical size of image is different the image have 1900 pixels width and 1028 pixels height, and was weight approx 550kb, its really slow down a website when we listing wordpress posts with feature image (which is so big right now) and our case study.

I fix this by adding own resizing function and simply class, I declare in blog

instead of:

the_post_thumbnail('medium', array('class' => 'media-object'));

this:

$get_url = wp_get_attachment_url( get_post_thumbnail_id($post->ID));
$local_small = Stefano_Resizer($get_url,300, 170);

and in my theme functions.php:

/RESIZE IMAGE


class ResizeThat
{
var $image;
var $image_type;
function load($filename)
{
$image_info = getimagesize($filename);
$this->image_type = $image_info[2];
if ($this->image_type == IMAGETYPE_JPEG)
{
$this->image = imagecreatefromjpeg($filename);
}
elseif ($this->image_type == IMAGETYPE_GIF)
{
$this->image = imagecreatefromgif($filename);
}
elseif ($this->image_type == IMAGETYPE_PNG)
{
$this->image = imagecreatefrompng($filename);
}
}

function save($filename, $image_type = IMAGETYPE_JPEG, $compression = 64, $permissions = null)
{
if ($image_type == IMAGETYPE_JPEG)
{
imagejpeg($this->image, $filename, $compression);
}
elseif ($image_type == IMAGETYPE_GIF)
{
imagegif($this->image, $filename);
}
elseif ($image_type == IMAGETYPE_PNG)
{
imagepng($this->image, $filename);
}

if ($permissions != null)
{
chmod($filename, $permissions);
}
}

function output($image_type = IMAGETYPE_JPEG)
{
if ($image_type == IMAGETYPE_JPEG)
{
imagejpeg($this->image);
}
elseif ($image_type == IMAGETYPE_GIF)
{
imagegif($this->image);
}
elseif ($image_type == IMAGETYPE_PNG)
{
imagepng($this->image);
}
}

function getWidth()
{
return imagesx($this->image);
}

function getHeight()
{
return imagesy($this->image);
}

function resizeToHeight($height)
{
$ratio = $height / $this->getHeight();
$width = $this->getWidth() * $ratio;
$this->resize($width, $height);
}

function resizeToWidth($width)
{
$ratio = $width / $this->getWidth();
$height = $this->getheight() * $ratio;
$this->resize($width, $height);
}

function scale($scale)
{
$width = $this->getWidth() * $scale / 100;
$height = $this->getheight() * $scale / 100;
$this->resize($width, $height);
}

function resize($width, $height)
	{
	$new_image = imagecreatetruecolor($width, $height);
	imagecopyresampled($new_image, $this->image, 0, 0, 0, 0, $width, $height, $this->getWidth() , $this->getHeight());
	$this->image = $new_image;
	}
}


function get_basename($filename)
{
    return preg_replace('/^.+[\\\\\\/]/', '', $filename);
}

function Stefano_Resizer($get_remote,$get_width, $get_height) {
$full_path = getcwd();
$ar = explode("wp-", $full_path);
$root =  $ar[0];
$get_local = '/wp-content/uploads/images/'.get_basename($get_remote);
$get_local_file = $root .'/wp-content/uploads/images/'.get_basename($get_remote);
$image = new ResizeThat();
	if(file_exists ($get_local_file)){
	return $get_local;
	} else {
	$image->load($get_remote);
	$image->resizeToWidth($get_width);
	//$image->resizeToHeight($get_height);
	$image->save($get_local_file);
	return $get_local;
	}
}

its work and make a copy of listed images into declare folder of Stefano function.

Would You fix that please?
We don't like add any functions because we use widely Wordpress and maintaining a code that way would be problematic in a future.
Btw. my head of development didn't allow to add new functionality so i try rise a problem here.

Kind regards
Stefan Oliwa
Web Developer and Clifton Group PLC.

[wonderboymusic]

You are gonna want to use add_image_size() - which will cut the additional size for you when you upload.