inset query

<?php
$con=mysqli_connect("localhost","root","","ses");
if($_POST['submit']){
$user=mysqli_real_escape_string($_SESSION["valid_user"]);
$sno=mysqli_real_escape_string($_POST["sno"]);
$date=mysqli_escape_string($_POST["date"]);
$title=mysqli_escape_string($_POST["title"]);
$report=mysqli_escape_string($_POST["report"]);
$url=mysqli_escape_string($_POST["url"]);
$sql="insert into lidiya(date,title,report,url) VALUE('".$date."','".$title."','".$report."','".$url."')";
$result=mysqli_query($con,$sql);
if($result){
    echo"<script>alert('saved');
location.href='home.php'</script>";
}
else{
    echo"<script>
    alert('not saved');
    location.href='add.php'
    </script>";
}
}
?>