That Infamous Chapter 7

arimakidd · November 10th, 2006, 04:32 PM

Everyone seems to be having a problem with chapter 7 one way or the other. My local installation is set up fine and the main images are going to the images folder just fine, my problem is the thumbnails folder. Nothing is going to the thumbnails folder. I decided to check the check_image.php file and my debugging technique is one where I simply echo out some text and then exit so the rest of the script so that it doesn't execute. Using this method, the only part of the script that doesn't execute the echo command is the part that re-sizes the original image to the thumbnail and then sends the thumbnail to the thumbnails folder. I really do hope I can get some help here. This is the entire script:

Code:

<?php

//connect to the database
$link = mysql_connect("localhost", "root", "newman$")
  or die("Could not connect: " . mysql_error());
mysql_select_db("moviesite", $link) 
  or die (mysql_error());

//make variables available
$image_caption = $_POST['image_caption'];
$image_username = $_POST['image_username'];
$image_tempname = $_FILES['image_filename']['name'];
$today = date("Y-m-d");

//upload image and check for image type
$ImageDir ="C:/apache/Apache2/htdocs/test/images/";

//**INSERT THIS LINE:
$ImageThumb = $ImageDir . "thumbs/";
//**END OF INSERT

$ImageName = $ImageDir . $image_tempname;

if (move_uploaded_file($_FILES['image_filename']['tmp_name'], 
                      $ImageName)) {

  //get info about the image being uploaded
  list($width, $height, $type, $attr) = getimagesize($ImageName);

  //**delete these lines
  switch ($type) {
    case 1:
      $ext = ".gif";
      break;
    case 2:
      $ext = ".jpg";
      break;
    case 3:
      $ext = ".png";
      break;
    default:
      echo "Sorry, but the file you uploaded was not a GIF, JPG, or " .
           "PNG file.<br>";
      echo "Please hit your browser's 'back' button and try again.";
  }
  //**end of deleted lines

  //**insert these new lines
  if ($type > 3) {
    echo "Sorry, but the file you uploaded was not a GIF, JPG, or " .
         "PNG file.<br>";
    echo "Please hit your browser's 'back' button and try again.";
  } else {

    //image is acceptable; ok to proceed

  //**end of inserted lines

  //insert info into image table

  $insert = "INSERT INTO images
            (image_caption, image_username, image_date)
            VALUES
            ('$image_caption', '$image_username', '$today')";
  $insertresults = mysql_query($insert)
    or die(mysql_error());

  $lastpicid = mysql_insert_id();


  //change the following line:
  $newfilename =  $ImageDir . $lastpicid . ".jpg";

  //**insert these lines
 if ($type == 2) {
    rename($ImageName, $newfilename);
  } elseif ($type == 1) {
      $image_old = imagecreatefromgif($ImageName);
  } elseif ($type == 3) {
      $image_old = imagecreatefrompng($ImageName);
  }
    $image_jpg = imagecreatetruecolor($width, $height);
    imagecopyresampled($image_jpg, $image_old, 0, 0, 0, 0,
                     $width, $height, $width, $height);
    imagejpeg($image_jpg, $newfilename);
    imagedestroy($image_old);
    imagedestroy($image_jpg);
  }
  }

//**INSERT THESE LINES

  $newthumbname = $ImageThumb . $lastpicid . ".jpg";

  //get the dimensions for the thumbnail
  $thumb_width = $width * 0.10;
  $thumb_height = $height * 0.10;


  //create the thumbnail
  $largeimage = imagecreatefromjpeg($newfilename);
  $thumb = imagecreatetruecolor($thumb_width, $thumb_height);
  imagecopyresampled($thumb, $largeimage, 0, 0, 0, 0, 
                    $thumb_width, $thumb_height, $width, $height);
  imagejpeg($thumb, $newthumbname);
  imagedestroy($largeimage);
  imagedestroy($thumb);
//**END OF INSERT
echo "good up to here";
exit();

  $url = "location: showimage.php?id=" . $lastpicid;
  header($url);
  //**end of inserted lines
}

?>

This is the part that doesn't echo out my debugging technique.

Code:

 if ($type == 2) {
    rename($ImageName, $newfilename);
  } elseif ($type == 1) {
      $image_old = imagecreatefromgif($ImageName);
  } elseif ($type == 3) {
      $image_old = imagecreatefrompng($ImageName);
  }
    $image_jpg = imagecreatetruecolor($width, $height);
    imagecopyresampled($image_jpg, $image_old, 0, 0, 0, 0,
                     $width, $height, $width, $height);
    imagejpeg($image_jpg, $newfilename);
    imagedestroy($image_old);
    imagedestroy($image_jpg);
  }


//**INSERT THESE LINES

  $newthumbname = $ImageThumb . $lastpicid . ".jpg";

  //get the dimensions for the thumbnail
  $thumb_width = $width * 0.10;
  $thumb_height = $height * 0.10;


  //create the thumbnail
  $largeimage = imagecreatefromjpeg($newfilename);
  $thumb = imagecreatetruecolor($thumb_width, $thumb_height);
  imagecopyresampled($thumb, $largeimage, 0, 0, 0, 0, 
                    $thumb_width, $thumb_height, $width, $height);
  imagejpeg($thumb, $newthumbname);
  imagedestroy($largeimage);
  imagedestroy($thumb);
//**END OF INSERT
echo "good up to here";
exit();

  $url = "location: showimage.php?id=" . $lastpicid;
  header($url);
  //**end of inserted lines
}

I do really hope I can get some help.

arimakidd · November 17th, 2006, 08:02 AM

This problem has been solved. It works now, the thumbnails go to the thumbnail folder and the original image goes to the images folder. The problem was caused by improper configuration of the php.ini file. Of course one problem leads to another. So now the images don't show, for some reason the image just shows all black. I am working on it.

arimakidd · November 17th, 2006, 10:18 AM

Ok, the thumbnails are showing fine. I have encountered another problem that I have decided to highlight in another topic. With regards to this topic the original code given in the book does need some editing. From curly braces have to be taken off and some lines really do have to be deleted.