1. Go to this page and download the library: Download czproject/css-minifier 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/ */
czproject / css-minifier example snippets
php
$compiler = new CzProject\CssTools\CssCompiler;
$compiler->compileFile(__DIR__ . '/styles.css'); // overwrite styles.css with compiled version
$compiledStyles = $compiler->processFile(__DIR__ . '/styles2.css');
$compiledStyles = $compiler->processContent(
'@import "mystyles.css";',
$stylesheetsRootDirectory
);