matthiasmullie / minify

    {

        // PHP only supports $this inside anonymous functions since 5.4

        $minifier = $this;

        $callback = function ($match) use ($minifier) {

            $count = count($minifier->extracted);

            $placeholder = '"'.$count.'"';

            $minifier->extracted[$placeholder] = $match[0];

            return $placeholder;

        };

        // match all chars except `/` and `\`

        // `\` is allowed though, along with whatever char follows (which is the

        // First extract comments we want to keep, so they can be restored later

        // PHP only supports $this inside anonymous functions since 5.4

        $minifier = $this;

        $callback = function ($match) use ($minifier) {

            $count = count($minifier->extracted);

            $placeholder = '/*'.$count.'*/';

            $minifier->extracted[$placeholder] = $match[0];

            return $placeholder;

        };

        $this->registerPattern('/

            # optional newline

            \n?