$_REQUEST | PHP Tutorial

The PHP $_REQUEST is a PHP superglobal variable that is used to collect the data after submitting an HTML form. The $_REQUEST superglobal is an associative array which also contains the contents of $_GET, $_POST, and $_COOKIE superglobals.

Example:

<html>
<body>
 
<form method="post" action="<?php echo $_SERVER['PHP_SELF'];?>">
  Name: <input type="text" name="fname">
  <input type="submit">
</form>
 
<?php
if ($_SERVER["REQUEST_METHOD"] == "POST") {
  // collect value of input field
  $name = $_REQUEST['fname'];  // Using $_REQUEST Superglobal
  if (empty($name)) {
    echo "Name is empty";
  } else {
    echo $name;
  }
}
?>
 
</body>
</html>