Download - php What is the process of saving images to the local mobile phone?

Question

Add watermark to the picture on the mobile phone and then save it locally on the phone
Why are the downloads you see now all downloaded to the server? Can't they be downloaded to the local phone?
The download code refers to this

    public function downloadImage($url, $path='images/')
    {
        $ch = curl_init();
        curl_setopt($ch, CURLOPT_URL, $url);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
        curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 30);
        $file = curl_exec($ch);
        curl_close($ch);
        $this->saveAsImage($url, $file, $path);
    }

    private function saveAsImage($url, $file, $path)
    {
        $filename = pathinfo($url, PATHINFO_BASENAME);
        $resource = fopen($path . $filename, 'a');
        fwrite($resource, $file);
        fclose($resource);
    }

Answer 1

DownloadImg downloads remote images to the local server. If you need to save the image locally on your mobile phone, this can only be achieved by browser and js. PHP runs on the server side

Answer 2

The correct answer upstairs is that downloading can be done without using the JS a tag

Answer 3

Just link the file address directly in your browser

Answer 4

In response to your question, the answer is: No.

This code of yours saves remote files to the server where PHP is located through http.

To download to your mobile phone, refer to http file download.

header('Content-Disposition: attachment; filename=xxxxx');
readfile('File on PHP server');