Need Help - Thumbnail Generation

selliott · April 16, 2007

Hey Everyone. I need to modify this code to upload the photo and create a thumbnail of that image in the thumbnails folder and was wondering of someone could help. I first tried to just make it place the same image in both folders, but I don't know what I'm doing. lol. It only follows the first upload command (either one places the image where it should, when it's first) and ignores the second...but I actually want it to generate a resized thumbnail anyway.

<?php

if ($_FILES['Filedata']['name']) {

//-------Upload photo
$uploadDir = getcwd() . "/../photos" . $_REQUEST['id'] . "/";
$uploadPhoto = $uploadDir . basename($_FILES['Filedata']['name']);

    move_uploaded_file($_FILES['Filedata']['tmp_name'], $uploadPhoto);

//-------Upload thumbnail
$uploadDir = getcwd() . "/../photos" . $_REQUEST['id'] . "/" . "thumbnails" . "/";
$uploadThumbnail = $uploadDir . basename($_FILES['Filedata']['name']);

    move_uploaded_file($_FILES['Filedata']['tmp_name'], $uploadThumbnail);

//--------define connectivity information
$database = "dbname";
$table = "photos" . $_REQUEST['id'];
$user = "dbuser";
$password = "dbpassword";
//-------connect to database
mysql_connect("mysql15.siteprotect.com", $user, $password) or die("Could not connect to database");
mysql_select_db($database) or die("Could not select database");

$photo = $table . "/" . basename($_FILES['Filedata']['name']);   // name of the photo as it appears in db

$thumbnail = $table . "/" . "thumbnails" . "/" . basename($_FILES['Filedata']['name']);   // name of the thumbnail as it appears in db

$query = "INSERT INTO $table VALUES ( '', '$photo', '', '$thumbnail' )";       // add name of photo to database

$myQuery = mysql_query($query);

}


?>

cyrixware · April 16, 2007

Hi try this. All you have to do is make a folder named THUMBS and IMAGES. Then,

thumbs.php

<?php

function createThumbs( $pathToImages, $pathToThumbs, $thumbWidth )

{

// open the directory

$dir = opendir( $pathToImages );

// loop through it, looking for any/all JPG files:

while (false !== ($fname = readdir( $dir ))) {

// parse path for the extension

$info = pathinfo($pathToImages . $fname);

// continue only if this is a JPEG image

if ( strtolower($info['extension']) == 'jpg' )

{

echo "Creating thumbnail for {$fname} <br />";

// load image and get image size

$img = imagecreatefromjpeg( "{$pathToImages}{$fname}" );

$width = imagesx( $img );

$height = imagesy( $img );

// calculate thumbnail size

//$new_width = $thumbWidth;

//$new_height = floor( $height * ( $thumbWidth / $width ) );

$new_width = $thumbWidth;

$new_height = "100";

// create a new tempopary image

$tmp_img = imagecreatetruecolor( $new_width, $new_height );

// copy and resize old image into new image

imagecopyresized( $tmp_img, $img, 0, 0, 0, 0, $new_width, $new_height, $width, $height );

// save thumbnail into a file

imagejpeg( $tmp_img, "{$pathToThumbs}{$fname}" );

}

// close the directory

closedir( $dir );

}

function createGallery( $pathToImages, $pathToThumbs )

{

echo "Creating gallery.html <br />";

$output = "<html>";

$output .= "<head><title>Thumbnails</title></head>";

$output .= "<body bgcolor=\"#000000\">";

$output .= "<table align=\"center\" cellspacing=\"0\" cellpadding=\"2\" width=\"500\">";

$output .= "<tr>";

// open the directory

$dir = opendir( $pathToThumbs );

$counter = 0;

// loop through the directory

while (false !== ($fname = readdir($dir)))

{

// strip the . and .. entries out

if ($fname != '.' && $fname != '..')

{

$output .= "<td valign=\"middle\" align=\"center\"><a href=\"{$pathToImages}{$fname}\">";

$output .= "<img src=\"{$pathToThumbs}{$fname}\" border=\"0\" />";

$output .= "</a></td>";

$counter += 1;

if ( $counter % 5 == 0 ) { $output .= "</tr><tr>"; }

}

// close the directory

closedir( $dir );

$output .= "</tr>";

$output .= "</table>";

$output .= "</body>";

$output .= "</html>";

// open the file

$fhandle = fopen( "gallery.html", "w" );

// write the contents of the $output variable to the file

fwrite( $fhandle, $output );

// close the file

fclose( $fhandle );

}

createThumbs("images/","thumbs/",100);

createGallery("images/","thumbs/");

?>

* Note: the thumbs.php, images and thumbs folder located in same directory. Hope it work...

cyrixware · April 16, 2007

You can resize the thumbnails..

$new_width = $thumbWidth;

$new_height = "100";

Set the size you want.. After you run the thumbs.php it will generate a gallery.html then open it.

selliott · April 16, 2007

Is it possible to place this inside my existing upload script somehow (so it processes automatically, without needing to use the separate upload function through the other page)? My admin/upload area is Flash based, and it executes this upload.php file to place the image in the photos folder (which a flash photo gallery is setup to pull from). I've modified the scripts to create a "thumbnails" folder inside the "photos" folder, but don't really know enough yet to change all the multiple scripts in order to change the folder names to "images" and "thumbs".

cyrixware · April 16, 2007

Did you try the codes? Place images inside of the thumbs folder then run the thumbs.php. After running the script open the gallery.html. All the images from thumbs folder will also display in images folder.

selliott · April 16, 2007

By "run thumbs.php", do you mean the photos have to be uploaded, then the user will have to go to the thumbs.php url to run the script? I need it to be as easy as possible for the person I'm building this for, so all they have to do is:

click Browse, upload the pic, then click the upload button and be done.

This is how it currently works, so when I add the thumbnail system, it needs to work the same.

cyrixware · April 17, 2007

ok thats what you mean. after browsing the images it will stored automatically on the dbase or folder when the user click upload.

as what ive said in your directory you created 2 folders namely thumbs and images.

upload.php

<?php
$filesize = $_FILES['userfile']['size']; 
$filetype = $_FILES['userfile']['type']; 
$nameuse = filename;
IF (($filesize <= 102000) AND ($filetype == 'image/pjpeg') OR ($filetype == 'image/jpeg'))
{

$nameuse = $_FILES['userfile']['name'];
//$nameuse  = gmdate("YmdHis");
// In PHP versions earlier than 4.1.0, $HTTP_POST_FILES should be used instead
// of $_FILES.
$uploaddir = 'your_directory\images\';
$uploadfile = $uploaddir . $nameuse;
echo '<pre>';
if (move_uploaded_file($_FILES['userfile']['tmp_name'], $uploadfile)) 
	{

   		echo "File is valid, and was successfully uploaded.\n";
	} 
else 
	{
   		echo "Possible file upload attack!";
	}
}
IF (($filetype != 'image/pjpeg') AND ($filetype != 'image/jpeg'))
	{
   		echo "Your Image is the wrong file type, it must be a jpg image<BR>your image is $filetype";
	}
IF ($filesize > 102000)
{
echo "Your Image is to large to upload";
}
?> 


<form method="POST" enctype="multipart/form-data" action="upload.php">
<p>
<input type="file" name="userfile" size="20">
<input type="submit" value="Submit" name="B1"><input type="reset" value="Reset" name="B2">
</p>
</form>

Then add the script of thumbs.php indside of this codes. put a link or re-direct the user to the gallery.html after uploading the images.

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Need Help - Thumbnail Generation

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