Chapter 7

Cliffy · August 18th, 2011, 07:59 AM

Hi,

just wondering if anyone can help me with this part. I've entered all the code for the file check_image.php but when I run the file upload_image.html and upload a pic, everything works apart from the thumbnail being created in the same directory as the image, but with a "t.jpg" extension.

Here is the code:

Quote:

<?php
//connect to MySQL
$db = mysql_connect('localhost', 'root', '') or
die ('Unable to connect. Check your connection parameters.');
mysql_select_db('moviesite', $db) or die(mysql_error($db));

//change this path to match your images directory
$dir ='C:/wamp/www/movie/images/';

//change this path to match your thumbnail directory
$thumbdir = $dir . 'C:/wamp/www/movie/thumbs/';

//change this path to match your fonts directory and the desired font
putenv('GDFONTPATH=' . 'C:/Windows/Fonts');
$font = getenv('GDFONTPATH'). '/arial.ttf';

// handle the uploaded image
if ($_POST['submit'] == 'Upload') {

//make sure the uploaded file transfer was successful
if ($_FILES['uploadfile']['error'] != UPLOAD_ERR_OK)
{
switch ($_FILES['uploadfile']['error']) {
case UPLOAD_ERR_INI_SIZE:
die('The uploaded file exceeds the upload_max_filesize directive ' .
'in php.ini.');
break;
case UPLOAD_ERR_FORM_SIZE:
die('The uploaded file exceeds the MAX_FILE_SIZE directive that ' .
'was specified in the HTML form.');
break;
case UPLOAD_ERR_PARTIAL:
die('The uploaded file was only partially uploaded.');
break;
case UPLOAD_ERR_NO_FILE:
die('No file was uploaded.');
break;
case UPLOAD_ERR_NO_TMP_DIR:
die('The server is missing a temporary folder.');
break;
case UPLOAD_ERR_CANT_WRITE:
die('The server failed to write the uploaded file to disk.');
break;
case UPLOAD_ERR_EXTENSION:
die('File upload stopped by extension.');
break;
}
}

//get info about the image being uploaded
$image_caption = $_POST['caption'];
$image_username = $_POST['username'];
$image_date = @date('Y-m-d');
list($width, $height, $type, $attr) =
getimagesize($_FILES['uploadfile']['tmp_name']);

// make sure the uploaded file is really a supported image
$error = 'The file you uploaded was not a supported filetype.';
switch ($type) {
case IMAGETYPE_GIF:
$image = imagecreatefromgif($_FILES['uploadfile']['tmp_name']) or
die($error);
break;
case IMAGETYPE_JPEG:
$image = imagecreatefromjpeg($_FILES['uploadfile']['tmp_name']) or
die($error);
break;
case IMAGETYPE_PNG:
$image = imagecreatefrompng($_FILES['uploadfile']['tmp_name']) or
die($error);
break;
default:
die($error);
}

//insert information into image table
$query = 'INSERT INTO images
(image_caption, image_username, image_date)
VALUES
("' . $image_caption . '", "' . $image_username . '", "' . $image_date .
'")';

$result = mysql_query($query, $db) or die (mysql_error($db));

//retrieve the image_id that MySQL generated automatically when we inserted
//the new record
$last_id = mysql_insert_id();

// save the image to its final destination
$image_id = $last_id;
imagejpeg($image, $dir . '/' . $image_id . '.jpg');
imagedestroy($image);

} else {
// retrieve image information
$query = 'SELECT
image_id, image_caption, image_username, image_date
FROM
images
WHERE
image_id = ' . $_POST['id'];
$result = mysql_query($query, $db) or die (mysql_error($db));
extract(mysql_fetch_assoc($result));

list($width, $height, $type, $attr) = getimagesize($dir . '/' . $image_id .
'.jpg');
}

if ($_POST['submit'] == 'Save') {
// make sure the requested image is valid
if (isset($_POST['id']) && ctype_digit($_POST['id']) &&
file_exists($dir . '/' . $_POST['id'] . '.jpg')) {
$image = imagecreatefromjpeg($dir . '/' . $_POST['id'] . '.jpg');
} else {
die('invalid image specified');
}

// apply the filter
$effect = (isset($_POST['effect'])) ? $_POST['effect'] : -1;
switch ($effect) {
case IMG_FILTER_NEGATE:
imagefilter($image, IMG_FILTER_NEGATE);
break;
case IMG_FILTER_GRAYSCALE:
imagefilter($image, IMG_FILTER_GRAYSCALE);
break;
case IMG_FILTER_EMBOSS:
imagefilter($image, IMG_FILTER_EMBOSS);
break;
case IMG_FILTER_GAUSSIAN_BLUR:
imagefilter($image, IMG_FILTER_GAUSSIAN_BLUR);
break;
}

// add the caption if requested
if (isset($_POST['emb_caption'])) {
imagettftext($image, 12, 0, 20, 20, 0, $font, $image_caption);
}

//add the logo watermark if requested
if (isset($_POST['emb_logo'])) {
// determine x and y position to center watermark
list($wmk_width, $wmk_height) = getimagesize('images/logo.png');
$x = ($width - $wmk_width) / 2;
$y = ($height - $wmk_height) / 2;

$wmk = imagecreatefrompng('images/logo.png');
imagecopymerge($image, $wmk, $x, $y, 0, 0, $wmk_width, $wmk_height, 20);
imagedestroy($wmk);
}

// save the image with the filter applied
imagejpeg($image, $dir . '/' . $_POST['id'] . '.jpg', 100);

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

//create the thumbnail
$thumb = imagecreatetruecolor($thumb_width, $thumb_height);
imagecopyresampled($thumb, $image, 0, 0, 0, 0, $thumb_width, $thumb_height,
$width, $height);
imagejpeg($thumb, $dir . '/' . $_POST['id'] . 't.jpg', 100);

?>
<html>
<head>
<title>Here is your pic!</title>
</head>
<body>
<h1>Your image has been saved!</h1>
<img src="http://p2p.wrox.com/images/<?php echo $_POST['id']; ?>.jpg" />
</body>
</html>
<?php
} else {
?>
<html>
<head>
<title>Here is your pic!</title>
</head>
<body>
<h1>So how does it feel to be famous?</h1>
<p>Here is the picture you just uploaded to our servers:</p>
<?php
if ($_POST['submit'] == 'Upload') {
$imagename = 'images/' . $image_id . '.jpg';
} else {
$imagename = 'image_effect.php?id=' . $image_id . '&e=' .
$_POST['effect'];

if (isset($_POST['emb_caption'])) {
$imagename .= '&capt=' . urlencode($image_caption);
}

if (isset($_POST['emb_logo'])) {
$imagename .= '&logo=1';
}
}
?>
<img src="<?php echo $imagename; ?>" style="float:left;">
<table>
<tr><td>Image Saved as: </td><td><?php echo $image_id . '.jpg'; ?></td></tr>
<tr><td>Height: </td><td><?php echo $height; ?></td></tr>
<tr><td>Width: </td><td><?php echo $width; ?></td></tr>
<tr><td>Upload Date: </td><td><?php echo $image_date; ?></td></tr>
</table>
<p>You may apply special options to your image below. Note: saving an image
with any of the options applied <em>cannot be undone</em>.</p>
<form action="<?php echo $_SERVER['PHP_SELF']; ?>" method="post">
<div>
<input type="hidden" name="id" value="<?php echo $image_id;?>"/>
Filter: <select name="effect">
<option value="-1">None</option>
<?php
echo '<option value="' . IMG_FILTER_GRAYSCALE . '"';
if (isset($_POST['effect']) && $_POST['effect'] == IMG_FILTER_GRAYSCALE) {
echo ' selected="selected"';
}
echo '>Black and White</option>';

echo '<option value="' . IMG_FILTER_GAUSSIAN_BLUR . '"';
if (isset($_POST['effect']) && $_POST['effect'] ==
IMG_FILTER_GAUSSIAN_BLUR) {
echo ' selected="selected"';
}
echo '>Blur</option>';

echo '<option value="' . IMG_FILTER_EMBOSS . '"';
if (isset($_POST['effect']) && $_POST['effect'] == IMG_FILTER_EMBOSS) {
echo ' selected="selected"';
}
echo '>Emboss</option>';

echo '<option value="' . IMG_FILTER_NEGATE . '"';
if (isset($_POST['effect']) && $_POST['effect'] == IMG_FILTER_NEGATE) {
echo ' selected="selected"';
}
echo '>Negative</option>';
?>
</select>
<br/><br/>
<?php
echo '<input type="checkbox" name="emb_caption"';
if (isset($_POST['emb_caption'])) {
echo ' checked="checked"';
}
echo '>Embed caption in image?';
echo '<br/><br/><input type="checkbox" name="emb_logo"';
if (isset($_POST['emb_logo'])) {
echo ' checked="checked"';
}
echo '>Embed watermarked logo in image?';
?>
<br/><br/>
<input type="submit" value="Preview" name="submit" />
<input type="submit" value="Save" name="submit" />
</div>
</form>
</body>
</html>
<?php
}
?>

UseLess · September 2nd, 2011, 05:53 AM

Greetings,

This bit;

Code:

//change this path to match your images directory
$dir ='C:/wamp/www/movie/images/';

//change this path to match your thumbnail directory
$thumbdir = $dir . 'C:/wamp/www/movie/thumbs/';

will mean that $thumbdir is;

Code:

C:/wamp/www/movie/images/C:/wamp/www/movie/thumbs/

and I'd guess that the above dir does not exist... ;)