NukeViet\Client\Browser::checkBrowserOpera PHP Méthode

    protected function checkBrowserOpera()
    {
        if (stripos($this->_agent, 'opera mini') !== false) {
            $resultant = stristr($this->_agent, 'opera mini');
            if (preg_match('/\\//', $resultant)) {
                $aresult = explode('/', $resultant);
                if (isset($aresult[1])) {
                    $aversion = explode(' ', $aresult[1]);
                    $this->setVersion($aversion[0]);
                }
            } else {
                $aversion = explode(' ', stristr($resultant, 'opera mini'));
                if (isset($aversion[1])) {
                    $this->setVersion($aversion[1]);
                }
            }
            $this->_browser_name = self::BROWSER_OPERA_MINI_NAME;
            $this->_browser_key = self::BROWSER_OPERA_MINI;
            $this->setMobile(true);
            return true;
        } elseif (stripos($this->_agent, 'opera') !== false) {
            $resultant = stristr($this->_agent, 'opera');
            if (preg_match('/Version\\/(1*.*)$/', $resultant, $matches)) {
                $this->setVersion($matches[1]);
            } elseif (preg_match('/\\//', $resultant)) {
                $aresult = explode('/', str_replace("(", " ", $resultant));
                if (isset($aresult[1])) {
                    $aversion = explode(' ', $aresult[1]);
                    $this->setVersion($aversion[0]);
                }
            } else {
                $aversion = explode(' ', stristr($resultant, 'opera'));
                $this->setVersion(isset($aversion[1]) ? $aversion[1] : "");
            }
            if (stripos($this->_agent, 'Opera Mobi') !== false) {
                $this->setMobile(true);
            }
            $this->_browser_name = self::BROWSER_OPERA_NAME;
            $this->_browser_key = self::BROWSER_OPERA;
            return true;
        } elseif (stripos($this->_agent, 'OPR') !== false) {
            $resultant = stristr($this->_agent, 'OPR');
            if (preg_match('/\\//', $resultant)) {
                $aresult = explode('/', str_replace("(", " ", $resultant));
                if (isset($aresult[1])) {
                    $aversion = explode(' ', $aresult[1]);
                    $this->setVersion($aversion[0]);
                }
            }
            if (stripos($this->_agent, 'Mobile') !== false) {
                $this->setMobile(true);
            }
            $this->_browser_name = self::BROWSER_OPERA_NAME;
            $this->_browser_key = self::BROWSER_OPERA;
            return true;
        }
        return false;
    }