Php

guys, pls i need you to help check my php code.it aint working and am new to php also
<?php
$username = $_POST[‘Name’];
$email = $_POST[‘Email’];
if(isset($_POST[‘submit’])) {
($_POST[‘Name’] == “$username”)||($_POST[‘Email’] == “$email”)||($_POST[‘Message’] =="$message");

$to = "tolulope_odumosu@yahoo.com";
$subject = “Contact Us”;
$email = $_REQUEST[‘Email’] ;
$message = $_REQUEST[‘Message’] ;
$headers = “From: $Email”;
$sent = mail($to, $subject, $message, $headers);
if($sent)
{
print “Your mail was sent successfully”;
}
else
{print “We encountered an error sending your mail”; }

}

?>