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imagepng

imagepng

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

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

Opis

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

Outputs or saves a PNG image from the given image.

Parametry

obraz

Zasób obrazu, zwrócony przez jedną z funkcji tworzących obrazy, taką jak imagecreatetruecolor().

filename

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

Notatka: 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.

Zwracane wartości

Zwraca TRUE w przypadku sukcesu, FALSE w przypadku porażki.

Rejestr zmian

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

Przykłady

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