PHP Critical CSS

A PHP class that uses sabberworm/php-css-parser to parse a CSS file, extracting any selector blocks which contain a CSS /* !critical */ comment - outputting them as separate files.

For an example of the CSS comment please see test/test.css.

Installation

composer require richmilns/php-critical-css

Usage

Command Line Interface

$ vendor/bin/critical-css path/to/my/file.css

PHP

use Exception;
use CriticalCSS\Parser;

require_once 'vendor/autoload.php';

try {
    $critical = new Parser('path/to/my/file.css');
    $critical->parse()->output('compact');
    // saves two new files:
    // - path/to/my/file-critical.css
    // - path/to/my/file-non-critical.css
} catch(Exception $exception) {
    ray($exception->getMessage());
}