Change the Width of a Picture

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Current Image:

Select Width Change (0 = no change, 5 = Max Change)

Width Determination:

Width

0   1   2   3   4   5  

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SLAVE CODE FOLLOWS

<?php // skinny script

$skinny = $_GET['sk'];

// get the images from files
$image = imagecreatefromjpeg("images/baby.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);

?>                                                                            

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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 the 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="images/baby.jpg" alt="My Dog">
        
        <p>
            Select Width Change (0 = no change, 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;                
        }
        
    // end of program
    // list code for slave routine        
    echo('<hr><br>SLAVE CODE FOLLOWS<br><br>');      
    highlight_file ('skinny.php');      
    echo('<hr>');     
            
    include('includes/footer.php');
?>

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