alert function using php value

<script type="text/javascript">
alert(" Plum Cakes : <?php echo $plum; ?> \n\nMuffins :<?php echo $muffins; ?> \n\nChristmas Brownie : <?php echo $brownie; ?> \n\n Brownie with a choice of nuts : <?php echo $nuts; ?> \n\nChocolates :<?php echo $choco; ?> \n\n Cookies :<?php echo $cookies ?> \n\nCake Pops :<?php echo $pops; ?> \n\nNo.Of Hampers :<?php echo $hamper; ?> \n\nTotal Cost :<?php echo $total; ?> ");
</script>

example

<?php

if(isset($_POST['plm-Qnty']) || isset($_POST['muff-Qnty']) || isset($_POST['brownie-Qnty']) || isset($_POST['nuts-Qnty'])|| isset($_POST['choco-Qnty']) || isset($_POST['cookies-Qnty']) || isset($_POST['pops-Qnty'])){

$plum = $_POST['plm-Qnty'];

$muffins = $_POST['muff-Qnty'];

$brownie = $_POST['brownie-Qnty'];

$nuts = $_POST['nuts-Qnty'];

$choco = $_POST['choco-Qnty'];

$cookies = $_POST['cookies-Qnty'];

$pops = $_POST['pops-Qnty'];

$hamper= $_POST['hamper-Qnty'];

$total = $plum + $muffins + $brownie + $nuts + $choco + $cookies + $pops ;

$count = 0;

if(!empty($plum)){ $count++; }

if(!empty($muffins)){ $count++; }

if(!empty($brownie)){ $count++; }

if(!empty($nuts)){ $count++; }

if(!empty($choco)){ $count++; }

if(!empty($cookies)){ $count++; }

if(!empty($pops)){ $count++; }

if($count > 3){

?>

<script type="text/javascript">

alert(" Plum Cakes : <?php echo $plum; ?> \n\nMuffins :<?php echo $muffins; ?> \n\nChristmas Brownie : <?php echo $brownie; ?> \n\n Brownie with a choice of nuts : <?php echo $nuts; ?> \n\nChocolates :<?php echo $choco; ?> \n\n Cookies :<?php echo $cookies ?> \n\nCake Pops :<?php echo $pops; ?> \n\nNo.Of Hampers :<?php echo $hamper; ?> \n\nTotal Cost :<?php echo $total; ?> ");

</script>

<?php

$to = "gnana@8perfmediaworks.com";

$sub = "Order";

$msg = "Plum Cakes : ".$plum."<br/>Muffins : ".$muffins."<br/>Christmas Brownie : ".$brownie."<br/> Brownie with a choice of nuts : ".$nuts."<br/>Chocolates :".$choco."<br/> Cookies : ".$cookies."<br/>Cake Pops :".$pops."<br/>No.Of Hampers :".$hamper."<br/>Total Cost :".$total;

 $headers  = "MIME-Version: 1.0\r\n";

 $headers .= "Content-type: text/html; charset=iso-8859-1\r\n";

 $headers .= "From: ".$personName."<".$mail.">\n";

 $headers .= "Reply-To:<".$mail.">\n";

 $headers .= "To:<".$to.">\n";

 $headers .= "Subject:<".$sub.">\n";

 $headers .= "Mailed-By:<".$mail.">\n";    

 $headers .= "X-Mailer: PHP/".phpversion()."\n";

 if(mail($to, $sub, $msg, $headers) ){

   echo "<script>alert('Thanks for the interest. Some one from our team will be in touch with you soon...');</script>";

    echo '<script> window.location = "index.php";</script>';

  }else{

   echo "<script>alert('Message sent unsuccessfully');</script>";

  }

} else {

               echo "<script>alert('Minimum 4 Fields are select');</script>";

}

}

?>