PHP: Check availability of a site

PHP: Check availability of a site

1. function checkUrl($url) {
2. $agent = "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:20.0) Gecko/20100101 Firefox/20.0";
3. $ch = curl_init();
4. curl_setopt($ch, CURLOPT_URL, $url);
5. curl_setopt($ch, CURLOPT_USERAGENT, $agent);
6. curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
7. curl_setopt($ch, CURLOPT_VERBOSE, false);
8. curl_setopt($ch, CURLOPT_TIMEOUT, 5);
9. $page = curl_exec($ch);
10. $resp = curl_getinfo($ch, CURLINFO_HTTP_CODE);
11. curl_close($ch);
12. if (($resp >= 200) && ($resp < 310))
13. return true;
14. else
15. return false;
16. }
17.  
18. if (checkUrl("http://example"))
19. echo "Website is available";
20. else
21. echo "Website is not available<br>";
22.