How to Fix 'Fatal Error: Class 'PHPMailer' Not Found' with Updated Configurations?

Resolving "Fatal Error: Class 'PHPMailer' Not Found" with Updated Configurations

The error "Fatal error: Class 'PHPMailer' not found" occurs when your code cannot locate the PHPMailer class. To resolve this, the outdated approach of using include_once() is no longer applicable. The latest version of PHPMailer requires a different initialization process.

Solution:

1. Locate the PHPMailer Files:

   • Place the following files in the same directory as your script:

     • PHPMailer.php
     • SMTP.php

2. Initialize the PHPMailer Class:

   • Use the following code to initialize a new PHPMailer instance:

require("/home/site/libs/PHPMailer-master/src/PHPMailer.php");
require("/home/site/libs/PHPMailer-master/src/SMTP.php");

$mail = new PHPMailer\PHPMailer\PHPMailer();

3. Configure SMTP Settings:

   • Replace the placeholders in the following code with your own SMTP settings:

$mail->IsSMTP(); // enable SMTP
$mail->SMTPDebug = 1; // debugging: 1 = errors and messages, 2 = messages only
$mail->SMTPAuth = true; // authentication enabled
$mail->SMTPSecure = 'ssl'; // secure transfer enabled REQUIRED for Gmail
$mail->Host = "smtp.gmail.com";
$mail->Port = 465; // or 587
$mail->IsHTML(true);
$mail->Username = "xxxxxx";
$mail->Password = "xxxx";
$mail->SetFrom("[email protected]");
$mail->Subject = "Test";
$mail->Body = "hello";
$mail->AddAddress("[email protected]");

4. Send the Email:

   • Use the following code to send the email:

if (!$mail->Send()) {
    echo "Mailer Error: " . $mail->ErrorInfo;
} else {
    echo "Message has been sent";
}

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