1. Go to this page and download the library: Download skyree/php-colorpicker library. Choose the download type require.
2. Extract the ZIP file and open the index.php.
3. Add this code to the index.php.
<?php
require_once('vendor/autoload.php');
/* Start to develop here. Best regards https://php-download.com/ */
skyree / php-colorpicker example snippets
$imageUrl = 'http://some.website/some/image.ext';
$colorPicker = new ColorPicker();
$palette = $colorPicker->pick($imageUrl, ColorPicker::KMEANS, 7, 150);
foreach ($palette as $cluster) {
echo sprintf("#%02x%02x%02x", ...$cluster['color']) . PHP_EOL; // will print up to 5 hex codes
}