PHPMailer: Parse error on the line 'composer install' - php

Question

I am trying to use PHPMailer on GoDaddy, this is my first time using it - however, it gives me the error; Parse error: syntax error, unexpected 'install' (T_STRING); on the line composer install, what is wrong? I have looked around at other posts and played around with the code but I still cannot figure out what is wrong.
Any help is greatly appreciated!
<?php
composer install
composer require phpmailer/phpmailer
use PHPMailer\PHPMailer\PHPMailer;
use PHPMailer\PHPMailer\SMTP;
use PHPMailer\PHPMailer\Exception;
require 'vendor/autoload.php';
$mail = new PHPMailer(true);
try {
//Server settings
$mail->SMTPDebug = SMTP::DEBUG_SERVER;
$mail->isSMTP();
$mail->Host = 'stmp.gmail.com';
$mail->SMTPAuth = true;
$mail->Username = 'MY EMAIL';
$mail->Password = 'MY PASSWORD';
$mail->SMTPSecure = PHPMailer::ENCRYPTION_SMTPS;
$mail->Port = 465;
$mail->setFrom('MY EMAIL', 'MY NAME');
$mail->addAddress('xxx');
// Content
$mail->isHTML(true);
$mail->Subject = 'Subject';
$mail->Body = 'This is the main message';
$mail->AltBody = 'Some body text';
$mail->send();
echo 'Message has been sent';
} catch (Exception $e) {
echo "Message could not be sent. Mailer Error: {$mail->ErrorInfo}";
}

Answer 1

note: If you are using a shared hosting on go daddy and not a dedicated server, I think you will not be able to run the composer, you will only use the SMTP configuration
otherwise try this
Run the commands via the command line.
composer require phpmailer/phpmailer
A folder called vendor will appear in your directory
root_path/
vendor/
index.php
Your php file should look like this
index.php
<?php
require 'vendor/autoload.php';
use PHPMailer\PHPMailer\PHPMailer;
use PHPMailer\PHPMailer\SMTP;
use PHPMailer\PHPMailer\Exception;
$mail = new PHPMailer(true);
try {
//Server settings
$mail->SMTPDebug = SMTP::DEBUG_SERVER;
$mail->isSMTP();
$mail->Host = 'stmp.gmail.com';
$mail->SMTPAuth = true;
$mail->Username = 'MY EMAIL';
$mail->Password = 'MY PASSWORD';
$mail->SMTPSecure = PHPMailer::ENCRYPTION_SMTPS;
$mail->Port = 465;
$mail->setFrom('MY EMAIL', 'MY NAME');
$mail->addAddress('xxx');
// Content
$mail->isHTML(true);
$mail->Subject = 'Subject';
$mail->Body = 'This is the main message';
$mail->AltBody = 'Some body text';
$mail->send();
echo 'Message has been sent';
} catch (Exception $e) {
echo "Message could not be sent. Mailer Error: {$mail->ErrorInfo}";
}