Post date format and select date format from the database - php

Question

I have a textbox that displays the current date in format: d-m-Y
<input type="text" name="date" class="form-control" value="<?php echo date('d-m-Y');?>"/>
When I save this the date will written to my database like: Y-m-d. For example: the current date is: 02-06-2016. My script writes this to the database as: 2002-06-16.
I am using the following code to save the data to my database:
<?php
session_start();
$correct = true;
$date = $_POST['date'] ;
if($correct){
$db = new PDO('mysql:host=localhost;dbname=db', 'root', '');
$query = "INSERT INTO table(date) VALUES (?)";
$stmt = $db->prepare($query);
$stmt->execute(array($date));
header('Location: ./index.php');
}
else
{
echo "Error";
}
?>
What do I need to change in my code so it will post it like: 2016-06-02 Y-m-d or 02-06-2016 d-m-Y?
If d-m-Y is not possible, how can show the data that is written like Y-m-d in the database show as format d-m-Y in my php script?
Edit:
For selecting the date I use:
<?php
$servername = "localhost";
$username = "root";
$password = "";
$dbname = "db";
// Create connection
$conn = new mysqli($servername, $username, $password, $dbname);
// Check connection
if ($conn->connect_error) {
die("Connection failed: " . $conn->connect_error);
}
$sql = "SELECT * FROM table WHERE id='1' ORDER BY id DESC LIMIT 1";
$sql = date("d-m-Y",strtotime($row['date']));
$result = $conn->query($sql);
if ($result->num_rows > 0) {
// output data of each row
while($row = $result->fetch_assoc()) {
echo "<td>" . $row["id"]. "</td>";
echo "<td>" . $row["date"]. "</td>";
}
} else {
echo "<p> </p>";
}
$conn->close();
?>

Answer 1

$date = $_POST['date'] ;
$date = date("Y-m-d",strtotime($date));
To show date in d-m-Y format in HTML page, again convert it into
$date = date("d-m-Y",strtotime($row['date']));
[Note: I'm assuming your fetch array as $row and column as date.]
For more info, please have a look on strtotime - php manual
Update Code (As question is edited)
$sql = "SELECT * FROM table WHERE id='1' ORDER BY id DESC LIMIT 1";
$result = $conn->query($sql);
if ($result->num_rows > 0) {
// output data of each row
while($row = $result->fetch_assoc()) {
echo "<td>" . $row["id"]. "</td>";
echo "<td>" . date("d-m-Y",strtotime($row['date'])). "</td>";
}
} else {
echo "<p> </p>";
}
$conn->close();