public function setUtf8unicode() {
	
		$this->openConnection();
		
		try {
			
			$this->handler->exec('SET NAMES utf8mb4 COLLATE utf8mb4_unicode_ci');
	
			$this->handler->exec(
				'SET character_set_client = "utf8mb4", character_set_connection = "utf8mb4",' . 
				' character_set_database = "utf8mb4", character_set_results = "utf8mb4",' .
				' character_set_server = "utf8mb4", collation_connection = "utf8mb4_unicode_ci",' .
				' collation_database = "utf8mb4_unicode_ci", collation_server = "utf8mb4_unicode_ci"');
		
		} catch (\Exception $e) {
			
			// cannot log right now
			
		}
			
		
	}