(PHP 4, PHP 5)
imagecolorstotal — Find out the number of colors in an image's palette
$image
)Returns the number of colors in an image palette.
imageAn image resource, returned by one of the image creation functions, such as imagecreatefromgif().
Returns the number of colors in the specified image's palette or 0 for truecolor images.
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);
?>
Il precedente esempio visualizzerà qualcosa simile a:
Total colors in image: 128