Laravel 5.6: Create image thumbnails

I recommend you this package is very simple to install and use it and very kind with programming. Its called Intervention

Intervention package to handle images

You can make a thumbnail very simple like the following :

$img = Image::make('public/foo.jpg')->resize(320, 240)->insert('public/watermark.png');

Resize and crop image by center

No need to install and include any package. Just create a helper in laravel / lumen and put below code in that helper file and use it wherever you want:

function resize_crop_image($max_width, $max_height, $source_file, $dst_dir, $quality = 80){    $imgsize = getimagesize($source_file);    $width = $imgsize[0];    $height = $imgsize[1];    $mime = $imgsize['mime'];    switch($mime){        case 'image/gif':            $image_create = "imagecreatefromgif";            $image = "imagegif";            break;        case 'image/png':            $image_create = "imagecreatefrompng";            $image = "imagepng";            $quality = 7;            break;        case 'image/jpeg':            $image_create = "imagecreatefromjpeg";            $image = "imagejpeg";            $quality = 80;            break;        default:            return false;            break;    }    $dst_img = imagecreatetruecolor($max_width, $max_height);    $src_img = $image_create($source_file);    $width_new = $height * $max_width / $max_height;    $height_new = $width * $max_height / $max_width;    //if the new width is greater than the actual width of the image, then the height is too large and the rest cut off, or vice versa    if($width_new > $width){        //cut point by height        $h_point = (($height - $height_new) / 2);        //copy image        imagecopyresampled($dst_img, $src_img, 0, 0, 0, $h_point, $max_width, $max_height, $width, $height_new);    }else{        //cut point by width        $w_point = (($width - $width_new) / 2);        imagecopyresampled($dst_img, $src_img, 0, 0, $w_point, 0, $max_width, $max_height, $width_new, $height);    }    $image($dst_img, $dst_dir, $quality);    if($dst_img)imagedestroy($dst_img);    if($src_img)imagedestroy($src_img);}//usage exampleresize_crop_image(100, 100, "test.jpg", "test.jpg");

Code is already tested many times and working well. All the best, save your time and enjoy your life :)