www.gusucode.com > Flarum中文优化论坛PHP源码程序 > FlarumChina-master/vendor/swiftmailer/swiftmailer/tests/StreamCollector.php

    <?php

class Swift_StreamCollector
{
    public $content = '';

    public function __invoke($arg)
    {
        $this->content .= $arg;
    }
}