What is the purpose of using $_POST in PHP when submitting form data to a database?

When submitting form data to a database in PHP, we use $_POST to retrieve the values of form fields that were sent using the POST method. This allows us to securely pass the data from the form to the database without exposing it in the URL. By using $_POST, we can access the form data in the PHP script and then sanitize and validate it before inserting it into the database. 

<?php
// Check if form is submitted
if ($_SERVER["REQUEST_METHOD"] == "POST") {
  
  // Retrieve form data using $_POST
  $name = $_POST['name'];
  $email = $_POST['email'];
  
  // Sanitize and validate the data
  $name = filter_var($name, FILTER_SANITIZE_STRING);
  $email = filter_var($email, FILTER_VALIDATE_EMAIL);
  
  // Insert data into the database
  // Your database connection and query code here
}
?>

Keywords

$_POST PHP form data database submission

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