PHP: Check if a website is online - php

Question

I have a curl based function in php to check if a website is online that works fine however i have noticed that it only works for http links and not https links.
Does anyone know how this function can be updated to support https links also.
function isDomainAvailible($domain){
// Check, if a valid url is provided
if(!filter_var($domain, FILTER_VALIDATE_URL)){
return false;
}
// Initialize curl
$curlInit = curl_init($domain);
curl_setopt($curlInit,CURLOPT_CONNECTTIMEOUT,10);
curl_setopt($curlInit,CURLOPT_HEADER,true);
curl_setopt($curlInit,CURLOPT_NOBODY,true);
curl_setopt($curlInit,CURLOPT_RETURNTRANSFER,true);
// Get answer
$response = curl_exec($curlInit);
curl_close($curlInit);
if ($response){
return true;
} else {
return false;
}
}

Answer 1

If you want to use your function and it u need https support then . you can download this file cacert.pem and add the path in your function like:
function isDomainAvailible($domain){
// Check, if a valid url is provided
if(!filter_var($domain, FILTER_VALIDATE_URL)){
return false;
}
// Initialize curl
$curlInit = curl_init($domain);
curl_setopt($curlInit,CURLOPT_CONNECTTIMEOUT,10);
curl_setopt($curlInit,CURLOPT_HEADER,true);
curl_setopt($curlInit,CURLOPT_NOBODY,true);
curl_setopt($curlInit,CURLOPT_RETURNTRANSFER,true);
curl_setopt($curlInit, CURLOPT_PROTOCOLS, CURLPROTO_HTTPS);
curl_setopt($curlInit, CURLOPT_PROTOCOLS, CURLPROTO_HTTP);
curl_setopt ($curlInit, CURLOPT_CAINFO, dirname(__FILE__)."/cacert.pem");
// Get answer
$response = curl_exec($curlInit);
curl_close($curlInit);
if ($response){
return 1;
} else {
return 0;
}
}
$domain = 'https://www.facebook.com';
$avi = isDomainAvailible($domain);
echo $avi;

Answer 2

try to add this in curl function
curl_setopt($curlInit, CURLOPT_SSL_VERIFYPEER, false);

Answer 3

When you say, "i have noticed that it only works for http links and not https links", what exactly do you mean? cURL works the same either way, you just pass it a url with the https protocol instead of http. The problem might be something else. Does this sound like what you're having trouble with? How to send HTTPS posts using php