Delete Data From Database Code in php

 <?php

include_once 'dbconnect.php' ;

$id= $_GET['/'];

$sql = "delete from vritant_tbl where id ='{$id}'";

$reslut_set = mysqli_query($conn,$sql);

$count = mysqli_affected_rows($conn);

if($count) {

?>

<script>

window.alert("Student Information Deleted");

window.location.href="show.php";

</script>

<?php

}else{

?>

<script>

window.alert("Not Deleted");

window.location.href="show.php";

</script>

<?php

}

?>