Change Width of a Picture

---

Current Image

Select Width Change (0 = No, 5 = Max Change)

Width Determination:

Width

0   1   2   3   4   5  

---

SLAVE CODE FOLLOWS

<?php
$skinny = $_GET['sk'];
// get the images from files
$image = imagecreatefromjpeg("plan_9.jpg");

// get sizes of original
$width_orig = imagesx($image);
$height = imagesy($image);

// adjust the width for the new image
$width = $width_orig - ($width_orig * $skinny * .05);

// create a new image
$new_image = imagecreatetruecolor($width, $height);

// resample old to new image
imagecopyresampled($new_image, $image, 0, 0, 0, 0, $width, $height, $width_orig, $height);

// set the header for the new image
header("Content-type: image/jpeg");
imagejpeg($new_image);
imagedestroy($new_image);

?>

---

---

CODE FOLLOWS

<?php
include('includes/header.php');
$self = basename($_SERVER['SCRIPT_NAME']);
$step = isset($_POST['step']) ? $_POST['step'] : 1;
$skinny = isset($_POST['choice']) ? $_POST['choice'] : null;

$s = 'CHECKED';

if(isset($_POST['choice']))
{
    $choice = $_POST['choice'];
}
else
{
    $choice = 0;    // set default here
}

?>
<h2>
    Change Width of a Picture
</h2>
<?php

switch ($step)
{

// STEP 1 ----------------------

case 1:    //--- get the change of brightness the user wants
?>
<hr>
<p>
    Current Image
</p>
<img src="plan_9.jpg" alt="Poster">
<p>
    Select Width Change (0 = No, 5 = Max Change)
</p>
<form action="<?php echo($self); ?>" method="post">
    <fieldset>
        <legend>Width Determination:</legend>
        <label for="choice">Width</label>
        <br><br>
        <?php
        for ($i = 0; $i <= 5; $i++)
        {
            ?>

            <input type="radio" id="choice" name="choice"
                   value="<?php echo($i); ?>"<?php if ($choice == $i) {
                echo($s);
            } ?> > <?php echo($i); ?> &nbsp;

            <?php
        }
        ?>
    </fieldset>
    <br>
    <br>
    <input type="submit" name="submit" value="Submit">
    <input type="hidden" name="step" value="2">
</form>
<br>
    <?php
    break;

    // STEP 2 ----------------------

    case 2:    //--- show the brightness

        // provide the user the opportunity to try again
        ?>

        <hr>

        <h3> Skinnyness: <?php echo($skinny);?></h3>

        <img src="skinny.php?sk=<?php echo($skinny);?> alt="My Skinny Dog">

        <br>

        <form action="<?php echo($self);?>" method="post">
            <input type="hidden" name="step" value="1">
            <input type="submit" value="Try Again">
        </form>

        <br>

        <?php
        break;
}
echo('<hr><br>SLAVE CODE FOLLOWS<br><br>');
highlight_file('skinny.php');
echo('<hr>');

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

---