Superglobals vs. Globals : _POST « Form « PHP






  1. PHP
  2. Form
  3. _POST

Superglobals vs. Globals

 
<html>
<body>
    <?php
      if ($submitted == "yes"){
        if (trim ($yourname) != ""){
          echo "Your Name: $yourname.";
        } else {
          echo "You must submit a value.";
        }
        ?><br /><a href="index.php">Try Again</a><br /><?php
      }
      if ($_POST['submitted'] == "yes"){
        if (trim ($_POST['yourname']) != ""){
          echo "Your Name: " . $_POST['yourname'] . ".";
        } else {
          echo "You must submit a value.";
        }
        ?><br /><a href="index.php">Try Again</a><br /><?php
      }
    ?>
    <?php
      if ($_POST['submitted'] != "yes"){
        ?>
        <form action="index.php" method="post">
          <p>Example:</p>
          <input type="hidden" name="submitted" value="yes" />
          Your Name: <input type="text" name="yourname" maxlength="150" /><br />
          <input type="submit" value="Submit"/>
        </form>
        <?php
      }
    ?>
  </div>
</body>
</html>








Related examples in the same category

1.Basic PHP form processing
2.Changing a value in $_POST
3.if else to check posted variables
4.Verifying a required element
5.Testing a required field
6.Set Cookie Data