Keep a website alive with php and curl

[andrewsmd]

Not sure if this should be here or in the windows forum. We have a website that is on a windows server. I'm trying to keep this site in the server memory so it always loads fast. I have a script right now that runs and checks the server response. What I don't get is why this isn't keeping the site alive? Can someone please explain why and give me a concept on how I can keep the site alive? I don't need the code, I can do that part. Here's what I do right now.

$site = 'http://example.com';
$agent = "Mozilla/4.0 (compatible; MSIE 5.01; Windows NT 5.0)";$ch=curl_init();
curl_setopt ($ch, CURLOPT_URL,$site );
curl_setopt($ch, CURLOPT_USERAGENT, $agent);
curl_setopt ($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt ($ch,CURLOPT_VERBOSE,false);
curl_setopt($ch, CURLOPT_TIMEOUT, 240);
curl_setopt($ch,CURLOPT_SSL_VERIFYPEER, FALSE);
curl_setopt($ch,CURLOPT_SSLVERSION,3);
curl_setopt($ch,CURLOPT_SSL_VERIFYHOST, FALSE);
$page=curl_exec($ch);
//echo curl_error($ch);
$httpcode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
curl_close($ch);
if($httpcode>=200 && $httpcode<=301){
return true;
}
else{

return false;

}

[andrewsmd]

I figured this out. I just needed to get the html from the website itself. Here's the code.

function getWithCurl($url)
{
$curl = curl_init();

// Setup headers - I used the same headers from Firefox version 2.0.0.6
// below was split up because php.net said the line was too long. :/
$header[0] = "Accept: text/xml,application/xml,application/xhtml+xml,";
$header[0] .= "text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5";
$header[] = "Cache-Control: max-age=0";
$header[] = "Connection: keep-alive";
$header[] = "Keep-Alive: 300";
$header[] = "Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7";
$header[] = "Accept-Language: en-us,en;q=0.5";
$header[] = "Pragma: ";
// browsers keep this blank.

$referers = array("google.com", "yahoo.com", "msn.com", "ask.com", "live.com");
$choice = array_rand($referers);
$referer = "http://" . $referers[$choice] . "";

$browsers = array("Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.0.3) Gecko/2008092510 Ubuntu/8.04 (hardy) Firefox/3.0.3", "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1) Gecko/20060918 Firefox/2.0", "Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.9.0.3) Gecko/2008092417 Firefox/3.0.3", "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.0; SLCC1; .NET CLR 2.0.50727; Media Center PC 5.0; .NET CLR 3.0.04506)");
$choice2 = array_rand($browsers);
$browser = $browsers[$choice2];

curl_setopt($curl, CURLOPT_URL, $url);
curl_setopt($curl, CURLOPT_USERAGENT, $browser);
curl_setopt($curl, CURLOPT_HTTPHEADER, $header);
curl_setopt($curl, CURLOPT_REFERER, $referer);
curl_setopt($curl, CURLOPT_AUTOREFERER, true);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
curl_setopt($curl, CURLOPT_TIMEOUT, 240);
curl_setopt($curl, CURLOPT_MAXREDIRS, 7);
curl_setopt($curl, CURLOPT_FOLLOWLOCATION, true);

$data = curl_exec($curl);

if ($data === false) {
//$data = curl_error($curl);
}

// execute the curl command
curl_close($curl);
// close the connection

return $data;
// and finally, return $html
}//getWithCurl