Here is the script that I use to call the function:

$work = new ImgResizer(’104246094.jpg’);
$work -> resize(400, ’104246094_400.jpg’);

I couldn’t get this work. Please can you check for me? No Error is given.

originalFile = $originalFile;
}
public function resize($newWidth, $targetFile) {
if (empty($newWidth) || empty($targetFile)) {
return false;
}
$src = imagecreatefromjpeg($this -> originalFile);
list($width, $height) = getimagesize($this -> originalFile);
$newHeight = ($height / $width) * $newWidth;
$tmp = imagecreatetruecolor($newWidth, $newHeight);
imagecopyresampled($tmp, $src, 0, 0, 0, 0, $newWidth, $newHeight, $width, $height);
if (file_exists($targetFile)) {
unlink($targetFile);
}
imagejpeg($tmp, $targetFile, 85); // 85 is my choice, make it between 0 – 100 for output image quality with 100 being the most luxurious
}
}

?>

resize(400, ’104246094_400.jpg’);
?>

private $originalFile = “uploads/thumb/$img”;

Second: I can’t seem to get it to work when using a $variable for the original image name.

e.g. private $originalFile = ‘uploads/thumb/$img’;
where $img = ‘asdf.jpg’;

Any pointers?

I was searching on Google one easy method for image resizing with PHP and, all other that I found are very extensive and complicated.

Thanks for your contribution to the PHP world and greetings from Spain!

Josep Crespo.

I did a bit of modification though that might help someone.

Added to: public function resize($newWidth, $targetFile, $ext)

This is a previously tested string that could be ‘jpg’, ‘gif’, or ‘png’.

Then I replaced the one imagefromjpeg with:
switch ($ext) {
case “jpg”:
$src = imagecreatefromjpeg($this -> originalFile);
break;
case “gif”:
$src = ImageCreateFromGif($this -> originalFile);
break;
case “png”:
$src = ImageCreateFrompng($this -> originalFile);
break;
}

And lastly, replaced the imagejpeg() with:

switch ($ext) {
case “jpg”:
imagejpeg($tmp, $targetFile, 80);
break;
case “gif”:
imagegif($tmp, $targetFile);
break;
case “png”:
imagepng($tmp, $targetFile, 8);
break;
}

So far, testing has worked well with all three types of files. Obviously it’ll break some, like animated Gifs, but given my application that wasn’t a deal breaker.

Thanks Yang!