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
imageAn 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.
