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


imagecolorstotal

(PHP 4, PHP 5)

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

Description

int imagecolorstotal ( resource $image )

Returns the number of colors in an image palette.

Parameters

image

An image resource, returned by one of the image creation functions, such as imagecreatefromgif().

Return Values

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

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);

// Free image
imagedestroy($im);
?>

The above example will output something similar to:

 Total colors in image: 128 

See Also



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