imagepng

(PHP 3 >= 3.0.13, PHP 4, PHP 5)

imagepng -- Output a PNG image to either the browser or a file

Описание

bool imagepng ( resource image [, string filename [, int quality [, int filters]]] )

Outputs or saves a PNG image from the given image.

Список параметров

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.

Замечание: 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.

Возвращаемые значения

Возвращает TRUE в случае успешного завершения или FALSE в случае возникновения ошибки.

Список изменений

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

Примеры

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

Смотрите также

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