Untitled

<?php
$servername = "localhost";
$username = "root";
$password= "";
$dbname = "inventory";

$conn = new mysqli($servername, $username, $password, $dbname);

if($conn->connect_error){
	die("Connection Failed:" . $conn->connect_error);
}

$bookid = $_POST['bookid'];
$title = $_POST['title'];
$author = $_POST['author'];
$accountnumber = $_POST['accountnumber'];
$callnumber = $_POST['callnumber'];


$sql = "INSERT INTO data (bookid,title,author,accountnumber,callnumber,) VALUES ('$bookid', $title','$author',
	'$accountnumber','$callnumber')";

if ($conn->query($sql) === TRUE) {
	$_session['comment']="Adding a new record successfully";
	header("Location:book.php");
	//echo "New record added successfully";
 } else{
	 echo "Error: " .$sql . "<br>" . $conn->error;
 }
$conn->close();
?>
<!DOCTYPE html>
<html>
<head>
	<title>ADDING DATA</title>
</head>
<body>
<form name="login" method="POST" action="book.php"><center>
*ADD A NEW DATA*<br/>
<a class='pull-left' href='home.php' style='text-decoration:none;'>back</a><br><br>
TITLE: <input type= "text" placeholder ="Enter your name" name = "title" required><br/>
AUTHOR: <input type= "text" placeholder ="Enter your address" name = "Author" required><br/>
ACCOUNT NUMBER: <input type= "text" placeholder ="Enter your course" name = "AccountNumber" required><br/>
CALL NUMBER: <input type= "text" placeholder ="Enter your birthdate" name = "CallNumber" required><br/>
<input type= "submit" value = "ADD"></center>
</body>
</html>