Saving State with a Hidden Field : Hidden Field « Form « PHP






  1. PHP
  2. Form
  3. Hidden Field

Saving State with a Hidden Field

 
<?php
  $num_to_guess = 42;
  $message = "";
  if (! isset ( $_POST ['guess'] )) {
    $message = "Welcome!";
  } else if ($_POST ['guess'] > $num_to_guess) {
    $message = $_POST ['guess'] . " is too big!";
  } else if ($_POST ['guess'] < $num_to_guess) {
    $message = $_POST ['guess'] . " is too small!";
  } else {
    $message = "Well done!";
  }
  $guess = ( int ) $_POST ['guess'];
  $num_tries = ( int ) $_POST ['num_tries'];
  $num_tries ++;
  ?>
<html>
<head>
<title>A PHP Number Guessing Script</title>
</head>
<body>
 <?php print $message?>
 Guess number: <?php print $num_tries?><br />
<form method="post" action="<?php
print $_SERVER ['PHP_SELF']?>">
<input type="hidden" name="num_tries"
  value="<?php
  print $num_tries?>" /> Type your guess here: <input type="text" name="guess" value="<?php
  print $guess?>" />
</form>
</body>
</html>








Related examples in the same category

1.Saving State with a Hidden Field
2.Using a hidden parameter to indicate form submission