FOF30\Update\Joomla::sanitiseVersion PHP Метод

    public function sanitiseVersion($version)
    {
        $test = strtolower($version);
        $alphaQualifierPosition = strpos($test, 'alpha-');
        $betaQualifierPosition = strpos($test, 'beta-');
        $betaQualifierPosition2 = strpos($test, '-beta');
        $rcQualifierPosition = strpos($test, 'rc-');
        $rcQualifierPosition2 = strpos($test, '-rc');
        $rcQualifierPosition3 = strpos($test, 'rc');
        $devQualifiedPosition = strpos($test, 'dev');
        if ($alphaQualifierPosition !== false) {
            $betaRevision = substr($test, $alphaQualifierPosition + 6);
            if (!$betaRevision) {
                $betaRevision = 1;
            }
            $test = substr($test, 0, $alphaQualifierPosition) . '.a' . $betaRevision;
        } elseif ($betaQualifierPosition !== false) {
            $betaRevision = substr($test, $betaQualifierPosition + 5);
            if (!$betaRevision) {
                $betaRevision = 1;
            }
            $test = substr($test, 0, $betaQualifierPosition) . '.b' . $betaRevision;
        } elseif ($betaQualifierPosition2 !== false) {
            $betaRevision = substr($test, $betaQualifierPosition2 + 5);
            if (!$betaRevision) {
                $betaRevision = 1;
            }
            $test = substr($test, 0, $betaQualifierPosition2) . '.b' . $betaRevision;
        } elseif ($rcQualifierPosition !== false) {
            $betaRevision = substr($test, $rcQualifierPosition + 5);
            if (!$betaRevision) {
                $betaRevision = 1;
            }
            $test = substr($test, 0, $rcQualifierPosition) . '.rc' . $betaRevision;
        } elseif ($rcQualifierPosition2 !== false) {
            $betaRevision = substr($test, $rcQualifierPosition2 + 3);
            if (!$betaRevision) {
                $betaRevision = 1;
            }
            $test = substr($test, 0, $rcQualifierPosition2) . '.rc' . $betaRevision;
        } elseif ($rcQualifierPosition3 !== false) {
            $betaRevision = substr($test, $rcQualifierPosition3 + 5);
            if (!$betaRevision) {
                $betaRevision = 1;
            }
            $test = substr($test, 0, $rcQualifierPosition3) . '.rc' . $betaRevision;
        } elseif ($devQualifiedPosition !== false) {
            $betaRevision = substr($test, $devQualifiedPosition + 6);
            if (!$betaRevision) {
                $betaRevision = '';
            }
            $test = substr($test, 0, $devQualifiedPosition) . '.dev' . $betaRevision;
        }
        return $test;
    }