wtf

<HTML>

<form method="POST">
<input type="text" name="weight" value="">
<input type="submit" value="Submit">
</form>

<?php
require('connect.php');

// Create connection
$conn = new mysqli($servername, $username, $password, $dbname);
// Check connection
if ($conn->connect_error) {
    die("Connection failed: " . $conn->connect_error);
}

//declare weight var


$weight = $_POST['weight'];

if(!isset($weight)){

  echo "Please enter your current weight";
}
else {



$sql = "INSERT INTO weighttracker (id, date, weight)
VALUES (0, CURDATE(), $weight)";

if ($conn->query($sql) === TRUE) {
    echo "New record created successfully";
} else {
    echo "Error: " . $sql . "<br>" . $conn->error;
}

}

$conn->close();


?>
</htML>