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Find out the number of colors in an image's palette

imagecolorstotal

(PHP 4, PHP 5, PHP 7, PHP 8)

imagecolorstotalFind out the number of colors in an image's palette

Description

imagecolorstotal(GdImage $image): int

Returns the number of colors in an image palette.

Parameters

image

A GdImage object, returned by one of the image creation functions, such as imagecreatetruecolor().

Return Values

Returns the number of colors in the specified image's palette or 0 for truecolor images.

Changelog

Version Description
8.0.0 image expects a GdImage instance now; previously, a valid gd resource was expected.

Examples

Example #1 Getting total number of colors in an image using imagecolorstotal()

<?php
// Create image instance
$im = imagecreatefromgif('php.gif');

echo
'Total colors in image: ' . imagecolorstotal($im);
?>

The above example will output something similar to:

Total colors in image: 128

See Also