$im = imagecreatefromstring("Hello world!"); $filename = "hello_world.jpg"; header('Content-Type: image/jpeg'); imagejpeg($im, $filename);
$filename = "original_image.jpg"; $thumbnail = imagecreatetruecolor(150, 150); $original = imagecreatefromjpeg($filename); imagecopyresized($thumbnail, $original, 0, 0, 0, 0, 150, 150, imagesx($original), imagesy($original)); header('Content-Type: image/jpeg'); imagejpeg($thumbnail);In both of these examples, the PHP Image Write function is used in conjunction with other PHP image processing functions to manipulate and create image content. It is likely that the developers used a package library like GD or ImageMagick to perform these operations.