imagecolorstotal

(PHP 4, PHP 5, PHP 7)

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

설명

int imagecolorstotal ( resource $image )

Returns the number of colors in an image palette.

인수

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

반환값

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

예제

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);
?>

위 예제의 출력 예시:

Total colors in image: 128

참고

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