PhraseIndexSearch::allowICURegularExpression

static function allowICURegularExpression(): bool
{
	static $allowICURE;
	if ($allowICURE === null)
	{
		$majorVersion = mb_substr(Application::getConnection()->getVersion()[0], 0, 1);
		$allowICURE = (int)$majorVersion >= 8;
	}

	return $allowICURE;
}