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Natalie's $_POST form

CODE FOLLOWS

<?php

include('includes/header.php');

// code
error_reporting(E_ALL);    // set error reporting to all

echo('<h1>Natalie\'s $_POST form</h1>');

// Note the variables being passed via the POST ternary operators.

$step = isset($_POST['step']) ? $_POST['step'] : 0;
$name = isset($_POST['name']) ? $_POST['name'] : '';
$phone = isset($_POST['phone']) ? $_POST['phone'] : '';

// filter all input taken from the Browser

$step = htmlentities($step);
$name = htmlentities($name);
$phone = htmlentities($phone);

if ($step == 0)    // first time into this form
{
    ?>

    <form action="natalie-post-form.php" method="POST" class = "pad">
        <label for="name">Name</label>
        <input type="text" size="36" id="name" name="name" value="">
        <br><br>
        <label for="phone">Phone</label>
        <input type="text" size="36" id="phone" name="phone" value="">
        <br><br>
        <input type="hidden" name="step" value="1">
        <input type="submit" name="submit" value="Submit">
    </form>

    <?php
}
else  // else show what the form gathered
{

    echo('<p>The following is what the form gathered</p>');
    echo('<pre>');
    print_r($_POST);    // note this dumps the entire contents of the $_POST array
    echo('</pre>');

    // provide a form to try again
    ?>

    <form action="natalie-post-form.php" method="POST">
        <input type="hidden" name="step" value="0">
        <input type="submit" name="submit" value="Try Again">
    </form>

    <?php
}

include('includes/footer.php');
?>
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