What other libraries or tools can be used to create thumbnails in PHP?

When creating thumbnails in PHP, you can also use libraries such as GD (Graphics Draw) or Imagick. These libraries provide functions to manipulate images, resize them, and create thumbnails easily. By using these libraries, you can generate thumbnails of images in various formats and sizes efficiently.

// Using GD library to create a thumbnail
$source_image = 'original_image.jpg';
$thumbnail_image = 'thumbnail_image.jpg';

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

$thumb_width = 100;
$thumb_height = 100;

$source = imagecreatefromjpeg($source_image);
$thumb = imagecreatetruecolor($thumb_width, $thumb_height);

imagecopyresized($thumb, $source, 0, 0, 0, 0, $thumb_width, $thumb_height, $width, $height);

imagejpeg($thumb, $thumbnail_image);
imagedestroy($source);
imagedestroy($thumb);