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imagepng

Name

imagepng — Ouputs a PNG image.

Synopsis

int imagepng(image[, file]); int image: Image identifier string file (optional): Filename

Returns

TRUE on success, FALSE on error

Description

imagepng() creates and outputs the PNG file from memory. An optional filename writes the PNG file to disk; otherwise, the image is sent directly to the client in binary form. PNG is a better option than using GIF files, as there are no legal problems using PNGs and they're fully compressible.

Version

Existing since version 3.0.13

Example

Example 430. Output a PNG file

header("Content-type: image/png");
$im = imagecreate(200, 200);
$green = imagecolorallocate($im, 0, 255, 0);
imagefill($im, 0, 0, $green);
imagepng($im);
imagedestroy($im);

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PHP Functions Essential Reference. Copyright © 2002 by New Riders Publishing (Authors: Zak Greant, Graeme Merrall, Torben Wilson, Brett Michlitsch). This material may be distributed only subject to the terms and conditions set forth in the Open Publication License, v1.0 or later (the latest version is presently available at http://www.opencontent.org/openpub/). The authors of this book have elected not to choose any options under the OPL. This online book was obtained from http://www.fooassociates.com/phpfer/ and is designed to provide information about the PHP programming language, focusing on PHP version 4.0.4 for the most part. The information is provided on an as-is basis, and no warranty or fitness is implied. All persons and entities shall have neither liability nor responsibility to any person or entity with respect to any loss or damage arising from the information contained in this book.