This issue persists (2019-12-18, Enfold v4.6.3.1).

allow_url_fopen = 0 is a good security setting in a shared environment (notice: it also disables get_headers(), so if one is not available – so is the other!). I have a better fix for this situation, since all you really need to know is whether the remote URL exists or not:

if(!function_exists('avia_is_200'))
{
    function avia_is_200($url)
    {
        if ( ini_get('allow_url_fopen') )
            return __avia_is_200_helper_fopen($url);
        else if ( function_exists("curl_init") )
            return __avia_is_200_helper_curl($url);
        else return false;
    }

    function __avia_is_200_helper_fopen($url)
    {
        $options['http'] = array(
            'method' => "HEAD",
            'ignore_errors' => 1,
            'max_redirects' => 0
        );
        $body = @file_get_contents($url, null, stream_context_create($options), 0, 1);
        sscanf($http_response_header[0], 'HTTP/%*d.%*d %d', $code);
        return $code === 200;
    }

    function __avia_is_200_helper_curl($url)
    {
        $ch = curl_init($url);
        curl_setopt($ch, CURLOPT_NOBODY, true);
        curl_setopt($ch, CURLOPT_TIMEOUT, 10);
        curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 10);
        curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'HEAD');
        // security isn't an issue in this case, and you can skip maintaining the root CA .pem required for this
        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
        curl_exec($ch);
        $code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
        curl_close($ch);
        return $code === 200;
    }
}

• This reply was modified 5 years ago by ellmann_creative.