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ImageMagick TIFF to JPEG - PHP

Hi guys,

Could somebody please tell me how to use ImageMagick to convert an image from tiff to jpeg, and then open it. Essentially it would be fantastic if somebody could fill in my tiff_to_jpeg function below:

function load_image($file_path, $mime) {
	switch ($mime) {
	case 'image/jpeg':
		return imagecreatefromjpeg($file_path);
	case 'image/png':
		return imagecreatefrompng($file_path);
	case 'image/gif':
		return imagecreatefromgif($file_path);
	case 'image/tiff':
		tiff_to_jpeg($file_path);
		return imagecreatefromjpeg($file_path.'.jpg');
	}
}

function tiff_to_jpeg($file_path) {
// TIFF to JPEG at maximum uncompressed quality.
// Simply concatenate '.jpg' to file path...
}

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TRW-Consulting

Can you provide a sample of what $file_path would be set to? And where would the newly created file be placed? The web server process will need write access to that location.

numberkruncher

ASKER

The web server process already has write access to that location as the file is uploaded and saved to wherever its destination may be.

$file_path could be any absolute path:
/home/vhosts/mydomain.com/httpdocs/uploads/file.tif

Output file:
/home/vhosts/mydomain.com/httpdocs/uploads/file.tif.jpg

TRW-Consulting

I would probably want to have the output file named /home/vhosts/mydomain.com/httpdocs/uploads/file.jpg

But based on your requirements the following should work:

function tiff_to_jpeg($file_path) {
  // TIFF to JPEG at maximum uncompressed quality.
  // Simply concatenate '.jpg' to file path...

  system("convert " . $file_path . " " . $file_path . ".jpg");
}

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numberkruncher

ASKER

That seems to do the trick. Could you please tell me how to specify uncompressed maximum quality?

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TRW-Consulting

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numberkruncher

ASKER

Perfect! Thanks for the help!