Question

I’m using this jQuery plugin to crop images:

http://www.tmatthew.net/jwindowcrop

As you can see, it’s really easy to use it on jQuery side, but my problem is with cropping the real image with PHP/GD.

with some goggling, I got:

$targ_w = $targ_h = 150;
$jpeg_quality = 90;

$src = 'demo_files/flowers.jpg';
$img_r = imagecreatefromjpeg($src);
$dst_r = ImageCreateTrueColor( $targ_w, $targ_h );

imagecopyresampled($dst_r,$img_r,0,0,$_POST['x'],$_POST['y'],
    $targ_w,$targ_h,$_POST['w'],$_POST['h']);

header('Content-type: image/jpeg');
imagejpeg($dst_r, null, $jpeg_quality);

But it’s not taking care of zoom ins/zoom outs made by the jQuery plugin, how I should crop the image and save it using this plugin and PHP?

Answer 1

I figured this out, here is my code in case of anyone else has the same question, the cropping will be done by Zebra image class:

http://stefangabos.ro/php-libraries/zebra-image/#documentation

PHP:

// The variables we got from the plugin in upload page:
$x = intval($_POST['x']);
$y = intval($_POST['y']);
$w = intval($_POST['w']);
$h = intval($_POST['h']);
// The img file which we want to crop
$tmp_file = 'path/to/img';
// Now include the Zebra class
include_once('path/to/Zebra_Image.php');
$image = new Zebra_Image();
$image -> preserve_aspect_ratio = true;
$image -> enlarge_smaller_images = true;
$image -> preserve_time = true;
$image -> jpeg_quality = 100;
// Now imagine that the user has selected the area which he want with the plugin, and we also want to make the image out put in a specific size(200*225):
$target_path = 'new/img/path'; // the output img path
$image -> source_path = $tmp_file;
$image -> target_path = $target_path;
$image -> crop($x, $y, $x + $w, $y + $h);
$image -> source_path = $target_path;
$image -> resize(200, 225,  ZEBRA_IMAGE_CROP_CENTER);