Problem with creating Thumbnail Images using php.

[sandhya]

Hi all,

    I'm trying to create thumbnails of images from database. for this i'm using the following code.I used the same code some where else. It worked. But not here. What's the problem? Here is the code.

<?

$thumb_dir = "admin/gallery/thumbs/";

$filename = 'admin/gallery/'.$rowgal[gal_photo];

$filename1 = 'admin/gallery/thumbs/'.$rowgal[gal_photo];

$thumb_height = 150;

 

// Content type

header('(anti-spam-(anti-spam-content-type:)) image/jpeg');

 

// Get new sizes

list($width, $height) = getimagesize($filename);

$ratio = ($height/$width);

$newheight = $thumb_height;

$newwidth = round($thumb_height/$ratio);

// Load

$thumb = imagecreatetruecolor($newwidth, $newheight);

$source = imagecreatefromjpeg($filename);

// Resize

imagecopyresized($thumb, $source, 0, 0, 0, 0, $newwidth, $newheight, $width, $height);

 

// Output

//imagejpeg($thumb, $thumb_dir, 100);

imagejpeg($thumb, $filename1, 100);

  ?>

I hope somebody can help me. Thanks in advance.

[phpdragon]

I resize like this

 

// create thumbnail (150x150)

$file = $_FILES['image_file']['tmp_name'];
list($width, $height) = getimagesize($file);

if ($width >= $height) {
	// scale to width
	$thumb_width = 150;
	$thumb_height = $height * ($thumb_width / $width);
} else {
	// scale to height
	$thumb_height = 150;
	$thumb_width = $width * ($thumb_height / $height);
}

$image = imagecreatefromjpeg($file);

// create thumbnail file
$thumb_image = imagecreatetruecolor($thumb_width, $thumb_height);
imagecopyresampled($thumb_image, $image, 0, 0, 0, 0, $thumb_width, $thumb_height, $width, $height);
$output_file = "admin/gallery/thumbs/".$_FILES['image_file']['name'];
imagejpeg($thumb_image, $output_file, 100);

 

hope this helps

[sandhya]

Thanks for your code. It works with the images taken from the form. But i am taking the existed images from the database. How can i create thumb nails for those images?

[phpdragon]

make your database query for the image names first,

then nominate the $file image in a while loop calling the image to be thumb-nailed from its directory