How to download images to local in PHP?

Question

The result of this question on Baidu seems to be one and then copied and pasted in various ways
Upload the image to the server

function dlfile($file_url, $save_to)
{
    $in=    fopen($file_url, "rb");
    $out=   fopen($save_to, "wb");
    while ($chunk = fread($in,8192))
    {
        fwrite($out, $chunk, 8192);
    }
    fclose($in);
    fclose($out);
}

Answer 1

It can be simpler like this

$url = "http://xxxxx";
$save_file = "xxx.xx";
file_put_contents($save_file, file_get_contents($url));

Answer 2

I just happened to write an article: /a/11...

Answer 3

fopen or file_get_contents are simple, but they do not support many features, such as connection timeout and other operations. In actual operation, the script may block for a long time until the PHP timeout setting is reached. If the concurrency is high, it may even bring down the server. Currently, curl is basically used instead