I have an application that has to crop images with variable width & height. but i don't know how to do this with the php gd (Createimagefromjpeg) function

我有一个应用程序,必须裁剪宽度和高度可变的图像。但我不知道如何使用php gd(Createimagefromjpeg)函数执行此操作

in my code i have:

在我的代码我有:

$targ_w = 400;
$targ_h = 400;

This means that the cropped image will always get this width and height. that's not what i want. i want, in some way crop the images and crop it like i selected it at the crop area like in this picture:

这意味着裁剪后的图像将始终获得此宽度和高度。那不是我想要的。我希望,以某种方式裁剪图像并裁剪它,就像我在裁剪区域选择它一样,如下图所示:

now when i crop that image, like in the picture i get this:

现在,当我裁剪图像时,就像在图片中我得到的那样:

It is a square image because i have to give a width and height. but at every image i crop the sizes are different.

这是一个方形图像,因为我必须给出宽度和高度。但在我裁剪的每一张图片上,尺寸都不同。

Is there a way (variables, id etc..) to do this?

有没有办法(变量,id等..)这样做?

Thanks :D

EDIT: my code to create the cropped image:

编辑:我创建裁剪图像的代码:

My code to upload the image:

我上传图片的代码:

    
    
    
    
    
    




    

    
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Copyright © Kees Sonnema & Jan Beetsma

My code to crop the image with JCrop:

我用JCrop裁剪图像的代码:

    
    
      
    
    


Selecteer een album:
";
    $handle = opendir($base);
    while (($file = readdir($handle))!==FALSE)
    {
        if (is_dir($base."/".$file) && $file != "." && $file !=".." && $file !="$uploads")
        {
            echo "$file
";
        }
    }
    closedir($handle);
}

else
{
    if (!is_dir($base."/".$get_album) || strstr($get_album,".")!=NULL || strstr($get_album,"/")!=NULL || strstr($get_album,"\\")!=NULL)
    {
        echo "Dit album bestaat niet.";
    }
    else
    {
        $x = 0;
        echo "$get_album
";
        $handle = opendir($base."/".$get_album);
        while (($file = readdir($handle)) !== FALSE)
        {
            if ($file != "." && $file != "..")
            {
                echo "
";
                $x++;
            }
                if ($x==$column)
                {
                    echo "
";
                    $x = 0;
                }
            }
    }
    closedir($handle);

    echo "
Terug Naar Albums";

}

?>

1 个解决方案

$dst_r = ImageCreateTrueColor( $targ_w, $targ_h );

$dst_r = imagecreatetruecolor($_POST['w'], $_POST['h']);

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

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