SMTP Error: Could not connect to SMTP host in php - php

Question

On sending emails from Gmail through SMTP I got this error:
SMTP Error: Could not connect to SMTP host
I tried:
require_once('mailer/class.phpmailer.php');
$mail = new PHPMailer();
$mail->IsSMTP();
$mail->SMTPDebug = 0;
$mail->SMTPAuth = true;
$mail->SMTPSecure = "ssl";
$mail->Host = "smtp.gmail.com";
$mail->Port = 465;
$mail->AddAddress($email);
$mail->Username="mail#gmail.com";
$mail->Password="password";
$mail->SetFrom('mail#gmail.com','Store');
$mail->AddReplyTo("mail#gmail.com","Store");
$mail->Subject = $subject;
$mail->MsgHTML($message);
$mail->Send();
Gmail account setting for "Less secure apps" is turned on
Update:
After trying this answer, I am getting:
Fatal error: Class 'SMTP' not found in C:\wamp64\www\project\mailer\class.phpmailer.php on line 1522

Answer 1

I am using below code for setting my values.. and it is working fine for me.
$mail = new PHPMailer;
//Tell PHPMailer to use SMTP
$mail->isSMTP();
//Enable SMTP debugging
// 0 = off (for production use)
// 1 = client messages
// 2 = client and server messages
$mail->SMTPDebug = 0;
$mail->Debugoutput = 'html';
$mail->Host = "smtp.gmail.com";
$mail->SMTPSecure = 'tls';
$mail->Port = 587;
$mail->SMTPAuth = true;
$mail->Username = "mail#gmail.com";
//Password to use for SMTP authentication
$mail->Password = "password";
$mail->SMTPOptions = array(
'ssl' => array(
'verify_peer' => false,
'verify_peer_name' => false,
'allow_self_signed' => true
)
);
$mail->setFrom("mail#gmail.com",$from);
$mail->addAddress("mail#gmail.com");
//Set the subject line
$mail->Subject = "subject";
$mail->Body = "body";
$mail->send();