SMTP connect failed - PHPMailer Error on Localhost - php

Question

I was using PHPMailer latest version and I was able to send emails using it. But now I don't know what had happened? Now I'm not able to send mail using it. It gives me following error -
Mailer Error: SMTP connect() failed. https://github.com/PHPMailer/PHPMailer/wiki/Troubleshooting
I have also checked openssl extension.
Here is my code -
<form method="post" action="mail.php">
<input type="text" placeholder="Enter your email to subscribe" name="emailid" />
<input type="submit" value="Submit" />
</form>
The contents of mail.php file
<?php
$emailSubscr = $_POST['emailid'];
$sub = 'New Subscriber';
$message = $emailSubscr.' has subscribed for newsletter';
require 'phpmailer/PHPMailerAutoload.php';
$mail = new PHPMailer;
//$mail->SMTPDebug = 3;
$mail->isSMTP();
$mail->Host = 'smtp.gmail.com'; // SMTP Host Name
$mail->SMTPAuth = true; // Enable SMTP authentication
$mail->Username = 'myusername#gmail.com'; // SMTP username
$mail->Password = 'mypassword'; // SMTP password
$mail->SMTPSecure = 'tls'; // Enable TLS encryption, `ssl` also accepted
$mail->Port = 587; // TCP port to connect to
$mail->From = $emailSubscr;
$mail->FromName = 'Subscriber';
$mail->addAddress('me#example.com', 'Rohit Kumar'); // Add a recipient
$mail->addReplyTo($emailSubscr, 'Subscriber');
$mail->Subject = $sub;
$mail->Body = $message;
if(!$mail->send()) {
echo 'Some error occured, please try again later.';
echo 'Mailer Error: ' . $mail->ErrorInfo;
} else {
echo 'Thanks for subscribing our newsletter on your email id.';
}
?>

Answer 1

Thanks Faiz Rasool. My issue is resolved.
can you do this please $mail->SMTPDebug = 3; and post the log – Faiz Rasool
Actually I use Mobile Broadband and its ip changes most of the time. And yesterday, google might have detected me as suspicious login when I tried accessing it with my app.When I login to my gmail account I saw a notice to change my password due to which my app was not able to login to my account.You helped me. When I checked the debug log, there was a message from google saying to login via web browser. I did so, resetted the password, selected the Suspicious login attempt as ME and my issue is resolved..
But the main thing here is, after setting google's option - Allow less secure apps to ON, Google was still blocking my app sometimes. I think the reason behind this (I think) is that my ip changes when I disconnect and reconnect my mobile broadband. And hence, my location changes.
By the way, I'm not using the GMail account anymore for my app.