#Performs a cURL-Request to check, if a website exists / is online #https://css-tricks.com/snippets/php/check-if-website-is-available/ <?php if (isDomainAvailible('http://www.css-tricks.com')) { echo "Up and running!"; } else { echo "Woops, nothing found there."; } //returns true, if domain is availible, false if not 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; return false; } ?>