Insert session into Mysql [closed] - php

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I am new to PHP and I am trying to enter details into my database.
Session I want to insert data into database with
<form method="post" action="">
<input name="p_date" type="date">
<input name="r_date" type="date">
</form>
if (!empty($_POST)) {
$_SESSION['p_date'] = $_POST['p_date'];
$_SESSION['r_date'] = $_POST['r_date'];
}
This code, Url on the side True is spinning but can't add data to database.
Where could i be wrong?
if(isset($_POST['dateSearch'])) {
$insert=$connect->prepare("Insert Into test (p_date,r_date) VALUES ('{$_SESSION['p_date']}','{$_SESSION['r_date']}'");
if($insert) {
header("Location:cars.php?Status=True");
}
else {
header("Location:cars.php?Status=False");
}
}
Thanks in advance..

Answer 1

for pdo this is how it should be done:
$sql = "INSERT INTO test (p_date,r_date) VALUES (?,?)";
$stmt= $pdo->prepare($sql);
$stmt->execute([$p_date,$r_date]);
for mysqli you can do like this:
$stmt = $conn->prepare("INSERT INTO test (p_date,r_date) VALUES (?, ?)");
$stmt->bind_param("ss", $p_date,$r_date);
$p_date = 'string';
$r_date ='string';
$stmt->execute();
$stmt->close();