imagepng
(PHP 4, PHP 5)
imagepng — Output a PNG image to either the browser or a file
Description
$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 save the file to. If not set or
NULL, the raw image stream will be outputted directly.Note:
NULLis invalid if thequalityandfiltersarguments 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_FILTERorPNG_ALL_FILTERSmay also be used to respectively disable or activate all filters.
Return Values
Returns TRUE on success or FALSE on failure.
Changelog
| Version | Description |
|---|---|
| 5.1.3 |
Added the filters parameter.
|
| 5.1.2 |
Added the quality parameter.
|
Examples
<?php
$im = imagecreatefrompng("test.png");
header('Content-Type: image/png');
imagepng($im);
imagedestroy($im);
?>
See Also
- imagegif() - Output image to browser or file
- imagewbmp() - Output image to browser or file
- imagejpeg() - Output image to browser or file
- imagetypes() - Return the image types supported by this PHP build
- imagesavealpha() - Set the flag to save full alpha channel information (as opposed to single-color transparency) when saving PNG images
Comments