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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 [, int quality [, int filters]]] )

Outputs or saves a PNG image from the given image.

Parameters

image

An image resource, returned by one of the image creation functions, such as imagecreatetruecolor().

filename

The path to the saved file. If not set or NULL, the raw image stream will be outputed directly.

Note: NULL is invalid if the quality and filters arguments are not used.

quality

Compression level: from 0 (no compression) to 9.

filters

Allows reducing the PNG file size. It is a bitmask field which may be set to any combination of the PNG_FILTER_XXX constants. PNG_NO_FILTER or PNG_ALL_FILTERS may also be used to respectively disable or activate all filters.

Return Values

Returns TRUE on success or FALSE on failure.

ChangeLog

VersionDescription
5.1.3 Added the filters parameter.
5.1.2 Added the quality parameter.

Examples

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

See Also

imagegif()
imagewbmp()
imagejpeg()
imagetypes()

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