使用代码igniter和gmail smtp在localhost上发送来自xampp的电子邮件

I am trying to create and test email functionality in a code igniter app on localhost using xampp server. I am trying to use the Google SMTP mail server by configuring it in php.ini and sendmail.ini. I am getting lots of errors which I cannot understand. My gmail account uses 2 step authentication. does that matter? Here's my codeI am trying to create and test email functional