jQuery image cropping plug-in Jcrop sample script

/**
 * jQuery image cropping plug-in Jcrop sample script
 * @copyright 2008 Kelly Hallman
 * This is translated and deleted by Zhang Xinxu to make it easier to understand and master
*/

if ($_SERVER['REQUEST_METHOD'] == 'POST'){
	//$targ_w = $targ_h = 150; //保存的图片的大小
	$jpeg_quality = 90;

	$src = '../image/xuwanting.jpg';
	$img_r = imagecreatefromjpeg($src);
	$dst_r = ImageCreateTrueColor( $_POST['w'], $_POST['h'] );

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

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

	exit;
}
?>