(PHP 3 >= 3.0.13, PHP 4, PHP 5)
imagepng -- Output a PNG image to either the browser or a file
Description
bool
imagepng ( resource image [, string filename] )
The imagepng() outputs a GD image stream
(image) in PNG format to standard output
(usually the browser) or, if a filename is given by the
filename it outputs the image to the file.
See also imagegif(), imagewbmp(),
imagejpeg(), imagetypes().