问允许用户手动裁剪特定大小的图像作为输出

EN

if ($_SERVER['REQUEST_METHOD'] == 'POST') {
    $targ_w = $targ_h = 150;
    $jpeg_quality = 80;

    $src = 'upload/test.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']);

    imagejpeg($dst_r, 'path/to/output.jpg', $jpeg_quality);

    exit;
}