I cant crop and embose a transparent png on jpeg which is rotated.
when i try to crop the rotated transparent png its coming with some background color and loosing its transparency.How can i do that?

do we get code?

This code is for rotatig transparent png without loosing its transparency

function createpngthumb($sourceImage,$new_width,$new_height ,$tp_index=2,$dest_image)
{
list($old_Width, $old_Height, $type, $attr) = getimagesize($sourceImage);

$im_arr= getimagesize($sourceImage);
$old_Width=$im_arr[0];
$old_Height=$im_arr[1];

$thumbHeight=$new_height;
$thumbWidth=$new_width;
#$image = imagecreatefrompng($sourceImage);
// Create the image based on image type


$image = imagecreatefrompng($sourceImage);




if ( ($old_Width>=$thumbWidth) or ($old_Height >= $thumbHeight))
{

if ($old_Width> $old_Height)
{
// calculate thumbnail size
$new_width = $thumbWidth;
$new_height = floor( $old_Height * ( $thumbWidth / $old_Width ) );

$left_pad = 0;
$top_pad = ($thumbHeight - $new_height) / 2;

}
else
{
// calculate thumbnail size
$new_height = $thumbHeight;
$new_width = floor( $old_Width * ( $thumbHeight / $old_Height ) );

$left_pad = ($thumbWidth - $new_width) / 2;
$top_pad = 0;
}

//echo 'new-width'.$new_width.'height'.$new_height;

$image_resized = imagecreatetruecolor( $thumbWidth, $thumbHeight );
// create a new temporary image
$tmp_img = imagecreatetruecolor( $new_width, $new_height );

$trnprt_indx = imagecolortransparent($tmp_img);
// Get the original image's transparent color's RGB values
$trnprt_color = imagecolorsforindex($tmp_img, $tp_index);
imagealphablending($tmp_img, false);
// Allocate the same color in the new image resource
$trnprt_indx = imagecolorallocate($tmp_img, 255, 255, 255);

// Completely fill the background of the new image with allocated color.
imagefill($tmp_img, 0, 0, $trnprt_indx);
imagesavealpha($tmp_img, true);
// Set the background color for new image to transparent
imagecolortransparent($tmp_img, $trnprt_indx);

// copy and resize old image into new image
imagecopyresampled( $tmp_img, $image, 0,0, 0, 0, $new_width, $new_height, $old_Width, $old_Height );

$trnprt_indx = imagecolortransparent($image_resized);
// Get the original image's transparent color's RGB values
$trnprt_color = imagecolorsforindex($image_resized, $tp_index);
imagealphablending($tmp_img, false);
// Allocate the same color in the new image resource
$trnprt_indx = imagecolorallocate($image_resized, 255, 255, 255);

// Completely fill the background of the new image with allocated color.
imagefill($image_resized, 0, 0, $trnprt_indx);
imagesavealpha($tmp_img, true);
// Set the background color for new image to transparent
imagecolortransparent($image_resized, $trnprt_indx);

// imagecopyresampled($image_resized, $tmp_img, 0, 0, 0, 0, $new_width, $new_height, $new_width, $new_height);
imagecopyresampled($image_resized, $tmp_img, $left_pad, $top_pad, 0, 0, $new_width, $new_height, $new_width, $new_height);


}
else
{

// calculate thumbnail size
$new_height = $old_Height;
$new_width = $old_Width;

// create a new temporary image
$tmp_img = imagecreatetruecolor( $new_width, $new_height );

$trnprt_indx = imagecolortransparent($tmp_img);

// Get the original image's transparent color's RGB values
$trnprt_color = imagecolorsforindex($tmp_img, $tp_index);
imagealphablending($tmp_img, false);
// Allocate the same color in the new image resource
$trnprt_indx = imagecolorallocate($tmp_img, 255, 255, 255);

// Completely fill the background of the new image with allocated color.
imagefill($tmp_img, 0, 0, $trnprt_indx);
imagesavealpha($tmp_img, true);
// Set the background color for new image to transparent
imagecolortransparent($tmp_img, $trnprt_indx);
// copy and resize old image into new image
imagecopyresampled( $tmp_img, $image, 0,0, 0, 0, $new_width, $new_height, $old_Width, $old_Height );


$left_pad = ($thumbWidth - $new_width) / 2;
$top_pad = ($thumbHeight - $new_height) / 2;

// create empty thumbnail img
$image_resized = imagecreatetruecolor($thumbWidth, $thumbHeight);

$trnprt_indx = imagecolortransparent($image_resized);
// Get the original image's transparent color's RGB values
$trnprt_color = imagecolorsforindex($image_resized, $tp_index);
imagealphablending($tmp_img, false);
$text_color = imagecolorallocate($image_resized, 255, 255, 255);
// Completely fill the background of the new image with allocated color.
imagefill($image_resized, 0, 0, $trnprt_indx);
imagesavealpha($tmp_img, true);
// Set the background color for new image to transparent
imagecolortransparent($image_resized, $trnprt_indx);



imagecopyresampled($image_resized, $tmp_img, $left_pad, $top_pad, 0,0, $new_width, $new_height ,$new_width, $new_height );

}
//create


$rotate = imagerotate($image_resized, 180, 0) ;

$im_new = imagepng($rotate,$dest_image,9);


#SET THE PERMISSIONS TO THE FOLDER
//chmod($dest_image,0777);
}

it ouputs some image

And now this code is to crop that image
function crop_image($nw, $nh, $source, $dest)
{
$size = getimagesize($source);

$w = $size[0];

$h = $size[1];

//extracting the extension of the given file
$stype= $this->file_extension($source);

//getting pathinformation
$path_info= $this->pathinfo_image($source);

//getting filename without extension
$filename= $path_info['basename'];

switch($stype)
{
case 'gif':
$simg = imagecreatefromgif($source);
break;
case 'jpg':
case 'jpeg':
$simg = imagecreatefromjpeg($source);
break;
case 'png':
$simg = imagecreatefrompng($source);
break;
}

$dimg = imagecreatetruecolor($nw, $nh);

$wm = $w/$nw;

$hm = $h/$nh;

$h_height = $nh/2;

$w_height = $nw/2;

if($w> $h)
{
$adjusted_width = $w / $hm;

$half_width = $adjusted_width / 2;

$int_width = $half_width - $w_height;

imagecopyresampled($dimg,$simg,-$int_width,0,0,0,$adjusted_width,$nh,$w,$h);
}
elseif(($w <$h) || ($w == $h))
{
$adjusted_height = $h / $wm;

$half_height = $adjusted_height / 2;

$int_height = $half_height - $h_height;
imagecopyresampled($dimg,$simg,0,-$int_height,0,0,$nw,$adjusted_height,$w,$h);
}
else
{
imagecopyresampled($dimg,$simg,0,0,0,0,$nw,$nh,$w, $h);
}

//imagejpeg($dimg, $dest.$filename,100);
//create
switch($stype)
{
case 1 : //Image is type gif.
$im_new = imagegif($th_img,$dest);
break;
case 2 : //Image is type jpeg.
$im_new = imagejpeg($dimg, $dest,80);
break;
case 3 : //Image is png.
$im_new = imagepng($dimg, $dest,9);
break;
default :
$im_new = imagejpeg($dimg, $dest,80);
break;
}

}
I am success to rotate image without losing its transparency .

And after that if it was cropped, it is not working

I think the answer is simple.
Jpg cannot have a transparent layer nor color.

gif can have 1 color defined as transparent, and png can have an alpha channel that indicate how much transparency is set.

So, simple answer is: you cannot keep transparency when you convert an png image to a jpg.

Thank u for response.
Actually i am successfully embosed png image on jpeg.
but i cant crop the image if it was rotaed. There is the problem was coming.
i didnt get what is the problem with rotation.With out rotaion i can embose image on jpeg.

The order was.

1.rotate image
2.crop image
3.embose on jpeg.

Once again thanks for responding.

PHP Code:

exec("convert {$source_png} -rotate 90 -gravity center -crop 200x200+0+0 {$target_png}"); 


Never manipulate images with php because there is specialized software made for exactly that purpose. ImageMagick.org.

Hi mtishetsky,

I have worked on your solution for rotating and cropping images and it is working perfectly, so, thankyou very much for your quick response to my problem.