Save and Optimize Image in PHP

Save and Optimize Image

<?php
// include composer autoload
require 'vendor/autoload.php';

// import the Intervention Image Manager Class
use Intervention\Image\ImageManager;

if (!function_exists('optimizeImage')) {
    /**
     * Save and Optimize Image
     */
    function optimizeImage($file, $fileName, $path, $width = null, $height = null)
    {
        // create an image manager instance with favored driver
        $manager = new ImageManager(array('driver' => 'gd'));
        $fileNameWithExtension = $file['name'];
        $ModifiedFileNameWithoutExtension = str_slug($fileName, '_') . '_' . md5(microtime());
        $fileExtension = pathinfo($fileNameWithExtension, PATHINFO_EXTENSION);
        // $ModifiedFileNameWithExtension = $ModifiedFileNameWithoutExtension.'.'.$fileExtension;
        $ModifiedFileNameWithExtension = $ModifiedFileNameWithoutExtension . '.' . 'jpg';

        // to finally create image instances
        $image = $manager->make($file['tmp_name']);

        $save_path = dirname(__DIR__) . $path;

        if (!file_exists($save_path)) {
            mkdir($save_path, 0777, true);
        }

        $pathWithFileName = $save_path . $ModifiedFileNameWithExtension;

        if (isset($width)) {
            $image->resize($width, $height, function ($constraint) {
                $constraint->aspectRatio();
            })->insert('watermark.png', 'bottom-right', 10, 10)
                ->encode('jpg', 75)
                ->save($pathWithFileName);
        } else {
            $image->insert('watermark.png', 'bottom-right', 10, 10)
                ->encode('jpg', 75)
                ->save($pathWithFileName);
        }

        return $ModifiedFileNameWithExtension;
    }

}