imagecolorstotal
(PHP 4, PHP 5, PHP 7)
imagecolorstotal — Find out the number of colors in an image's palette
Description
imagecolorstotal ( resource $image ) : int
Returns the number of colors in an image palette.
Parameters
-
image -
An image resource, 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.
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
- imagecolorat() - Get the index of the color of a pixel
- imagecolorsforindex() - Get the colors for an index
- imageistruecolor() - Finds whether an image is a truecolor image
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https://www.php.net/manual/en/function.imagecolorstotal.php