Manuale PHP
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# imagepng

(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.

`<?php $im = imagecreatefrompng("test.png"); imagepng($im); ?>`

See also imagegif(), imagewbmp(), imagejpeg(), imagetypes().

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