怎样做页面HTTP状态查询,该如何处理

怎样做页面HTTP状态查询
怎样做页面HTTP状态查询
http://tool.chinaz.com/pagestatus/
就像这个一样的

[解决办法]
读http头啊
[解决办法]
var_dump(getallheaders());
[解决办法]

PHP code

function curl_file_get_contents($durl){    $ch = curl_init();    curl_setopt($ch, CURLOPT_URL, $durl);    curl_setopt($ch, CURLOPT_TIMEOUT, 5);    curl_setopt($ch, CURLOPT_HEADER, true);    curl_setopt($ch, CURLOPT_NOBODY, 1);    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);    $r = curl_exec($ch);    //$http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);     return $r;}