Problem with ImageCreateFromPNG

M2_

I am trying to add a watermarks to existing jpeg files in a specific directory.

I am using a function call... the function is this

function watermark($srcfilename, $newname, $watermark, $quality) {
	$imageInfo = getimagesize($srcfilename); 
	$width = $imageInfo[0]; 
	$height = $imageInfo[1]; 
	$logoinfo = getimagesize($watermark);
	$logowidth = $logoinfo[0];
	$logoheight = $logoinfo[1];
	$vertextra =$height - $logoheight;
	$vertmargin =  round($vertextra);
	$photoImage = ImageCreateFromJPEG($srcfilename);
	ImageAlphaBlending($photoImage, true);
	$logoImage = ImageCreateFromPNG($watermark);
	$logoW = ImageSX($logoImage);
	$logoH = ImageSY($logoImage);
	ImageCopy($photoImage, $logoImage, $horizmargin, $vertmargin, 0, 0, $logoW, $logoH);
	//ImageJPEG($photoImage); // output to browser
	ImageJPEG($photoImage,"images/watermarked/wm_".$newname, $quality); 
	ImageDestroy($photoImage);
	ImageDestroy($logoImage);
}

When I perform the function, it returns a 500 Server error, and a dumps a file called core in the directory where the .php file is. If I disable the line

$logoImage = ImageCreateFromPNG($watermark);

... the function performs ok, but obviously doesn't create the watermarked jpeg.

Here is my php environment - http://photo.lavertue.com/echo.php - in case it's useful to know to give me a hand. I really don't know this stuff that well, but I know how to edit pretty darn well to make things work for myself. 😉
I would consider myself a deep learner who has used it a bit.

Thanks.

Bah__Name

Is $watermark a PNG file?

Mordecai

It might be giving a 500 because there is no data being sent--try echoing out something (echo("\n"), for instance) in case the image isn't being sent.
Turn error reporting to full (error_reporting(E_ALL)) so you can find out what the error is, if one is returned. What's that give you?

M2_

Originally posted by Bah! Name
Is $watermark a PNG file?

Yes 😉

M2_

Originally posted by Mordecai
It might be giving a 500 because there is no data being sent--try echoing out something (echo("\n"), for instance) in case the image isn't being sent.
Turn error reporting to full (error_reporting(E_ALL)) so you can find out what the error is, if one is returned. What's that give you?

Mordecai...

I used error_reporting (E_ALL); and it didn't return anything other than the same 500 server error. I also performed a simple echo "nothing"; and also return the same error.

Thanks.