How to delete an image from the database and folder in PHP - php

Question

I have PHP code that I am trying to delete the image from the database and uploads folder as well. I have researched and it seems
like I need the unlink option but I don't know enough about PHP or
coding on how to implement it. The code I have will delete from the
MySQL database just fine but when I try to add the uplink code it
breaks it and doesn't do anything.
I have tried adding in the following:
$file_path = 'uploads/' . $_POST["images"];
if(unlink($file_path))
to the code below.
//start PHP session
session_start();
if (!isset($_SESSION['success']))
{
header("Location: login_page.php");
die();
}
// check if value was posted
if($_POST){
// include database and object file
include_once 'config/database.php';
$file_path = 'uploads/' . $_POST["image"];
if(unlink($file_path))
{
// delete query
$query = "DELETE FROM dhospital WHERE id = ?";
$stmt = $con->prepare($query);
$stmt->bindParam(1, $_POST['object_id']);
}
if($stmt->execute()){
// redirect to read records page and
// tell the user record was deleted
echo "Record was deleted.";
}else{
echo "Unable to delete record.";
}
}
I am using PHP - PDO - MySQL