send or not send email

Several nurses attend the same patient.
Therefore when something is changed in a dossier an email is send to those nurses.
But sometimes a dossier just need some 'cleaning up' and is an email not nessesary to send.

I made a checkbox that is normaly 'on'. But is an email is not to be send the checkbox is un-checked before saving.

The field name of the checkbox is 'emailbericht'.

AfterEdit

		// **********  Send conformation email  ************
ini_set('SMTP','smtp.email.com');
$html = true;

// variables
	$stuur = $values["emailbericht"];
	$from = "me.mail.com";
	
$subject = "Patient";

$message   = 'Bla bla bla';
$message  .= 'Bla bla bla' . "<br />" . "<br />";
$message  .= 'Administration';


//Headers
$headers	 = 'From: ' . $website_naam . ' <' . $from . '>' . PHP_EOL;
$headers	.= 'X-Mailer: PHP/' . phpversion() . PHP_EOL;
$headers	.= 'X-Priority: Normal' . PHP_EOL;
$headers	.= ($html) ? 'MIME-Version: 1.0' . PHP_EOL : '';
$headers	.= ($html) ? 'Content-type: text/html; charset=iso-8859-1' . PHP_EOL : '';

if ($stuur = 1)// Send the message
{
mail($from, $subject, $message, $headers);
}
else
{
echo "Waarde : $stuur";	
}
header("Location: Particulieren_list.php?a=return");
exit();

		

The problem is that eather way the email is send.