smtp configuration for php mail

Question

I am sending mails from my website by using php mail function. But now it is not working and I contacted our hosting team then they told me to use smtp as they did some changes in server. I don't know how to do it. Current code (with php mail function) is as follows, can anyone help me about the changes which I have to do with this.

<?php
$mail_To="someone@gmail.com";
$headers = "";
$headers .= "From: livetv@muscle-tube.com
";
$headers .= "Reply-To: livetv@muscle-tube.com
";
$headers .= "MIME-Version: 1.0
";
$headers .= "Content-type: text/html; charset=iso-8859-1
";
$headers .= "X-Mailer: php";
$mail_Subject = " Live TV key";
$mail_Body = "<p>Muscle-tube</p>";
mail($mail_To, $mail_Subject, $mail_Body,$headers);
?>

Answer 1

PHP's mail() function does not have support for SMTP. You're going to need to use something like the PEAR Mail package.

Here is a sample SMTP mail script:

<?php
require_once("Mail.php");

$from = "Your Name <email@blahblah.com>";
$to = "Their Name <otheremail@whatever.com>";
$subject = "Subject";
$body = "Lorem ipsum dolor sit amet, consectetur adipiscing elit...";

$host = "mailserver.blahblah.com";
$username = "smtp_username";
$password = "smtp_password";

$headers = array('From' => $from, 'To' => $to, 'Subject' => $subject);

$smtp = Mail::factory('smtp', array ('host' => $host,
                                     'auth' => true,
                                     'username' => $username,
                                     'password' => $password));

$mail = $smtp->send($to, $headers, $body);

if ( PEAR::isError($mail) ) {
    echo("<p>Error sending mail:<br/>" . $mail->getMessage() . "</p>");
} else {
    echo("<p>Message sent.</p>");
}
?>