src/Ciconia/Extension/Html/AttributesExtension.php
protected function parseAttributes(Text $text)
    {
        $patterns = [
            'id'    => '/^#([a-zA-Z0-9_-]+)/',
            'class' => '/^\.([a-zA-Z0-9_-]+)/',
            'attr'  => '/^\[([^\]]+)\]/',
            'ident' => '/^(.)/'
        ];

        $tokens = [
            'id' => [], 'class' => [], 'attr' => [], 'ident' => []
        ];

        while (!$text->isEmpty()) {
            foreach ($patterns as $name => $pattern) {
                if ($text->match($pattern, $matches)) {
                    $tokens[$name][] = $matches[1];
                    $text->setString(
                        substr($text->getString(), strlen($matches[0]))
                    );

                    break;
                }
            }
        }

        $attributes = array();

        if (count($tokens['id'])) {
            $attributes['id'] = array_pop($tokens['id']);
        }

        if (count($tokens['class'])) {
            $attributes['class'] = implode(' ', $tokens['class']);
        }

        if (count($tokens['attr'])) {
            foreach ($tokens['attr'] as $raw) {
                $items = explode(' ', $raw);
                foreach ($items as $item) {
                    if (strpos($item, '=') !== false) {
                        list ($key, $value) = explode('=', $item);
                        $attributes[$key] = trim($value, '"');
                    } else {
                        $attributes[$item] = $item;
                    }
                }
            }
        }

        return $attributes;
    }
protected function parseAttributes(Text $text)
    {
        $patterns = [
            'id'    => '/^#([a-zA-Z0-9_-]+)/',
            'class' => '/^\.([a-zA-Z0-9_-]+)/',
            'attr'  => '/^\[([^\]]+)\]/',
            'ident' => '/^(.)/'
        ];

        $tokens = [
            'id' => [], 'class' => [], 'attr' => [], 'ident' => []
        ];

        while (!$text->isEmpty()) {
            foreach ($patterns as $name => $pattern) {
                if ($text->match($pattern, $matches)) {
                    $tokens[$name][] = $matches[1];
                    $text->setString(
                        substr($text->getString(), strlen($matches[0]))
                    );

                    break;
                }
            }
        }

        $attributes = array();

        if (count($tokens['id'])) {
            $attributes['id'] = array_pop($tokens['id']);
        }

        if (count($tokens['class'])) {
            $attributes['class'] = implode(' ', $tokens['class']);
        }

        if (count($tokens['attr'])) {
            foreach ($tokens['attr'] as $raw) {
                $items = explode(' ', $raw);
                foreach ($items as $item) {
                    if (strpos($item, '=') !== false) {
                        list ($key, $value) = explode('=', $item);
                        $attributes[$key] = trim($value, '"');
                    } else {
                        $attributes[$item] = $item;
                    }
                }
            }
        }

        return $attributes;
    }
@param Text $text

@return array