插入数据条目mysql数据库

Question

I keep getting this error: POST http://page/insert.php 500 (Internal Server Error)

Here is my JAVASCRIPT

function call(){
         // syntax: $.post(URL,data,callback);
           $.post("insertDb.php",
                {
                    address: $("#address").val(),
                    bedroom: $("#postbedroom").val(),
                    bathroom: $("#postbathroom").val(),
                    type: $("#posttype").val(),
                    pet: $("#postpet").val(),
                    price: $("#postprice").val(),
                    img: $("#postimg").val()

                }
                , display
            );
        }

Here is my PHP

 <?php
$con=mysqli_connect('###', '###', '###', '###');
if (mysqli_connect_errno($con))
  {
  echo "Failed to connect to MySQL: " . mysqli_connect_error();
  }
 $sql = "INSERT INTO `property` (address, bedroom, bathroom, type, pet_friendly, price, img_path) 
VALUES 
 ('".$_POST['address']."', '".$_POST['bedroom']."', '".$_POST['bathroom']."', '".$_POST['type']."', '".$_POST['pet']."', '".$_POST['price']."','".$_POST['img']."' )";
if (!mysqli_query($con,$sql))
  {
  die('Error: ' . mysqli_error($con));
  }
echo "1 record added";
mysqli_close($con);

?>

I just omitted the connection for security reasons.

Can someone please help me ? Thanks !