PHP获取访问页面HTTP状态码的实现代码

$header_info=get_headers(‘//www.jb51.net/‘);echo $header_info[0];//耗时 0.67~0.78

$ch = curl_init ( ‘//www.jb51.net/‘ );curl_setopt ( $ch, CURLOPT_RETURNTRANSFER, 1 );curl_exec ( $ch );$httpcode = curl_getinfo ( $ch, CURLINFO_HTTP_CODE ); // 200curl_close ( $ch );echo $httpcode;//耗时 0.84~0.94

$curl = curl_init();$url=‘//www.jb51.net/‘;curl_setopt($curl, CURLOPT_URL, $url); //设置URLcurl_setopt($curl, CURLOPT_HEADER, 1); //获取Headercurl_setopt($curl,CURLOPT_NOBODY,true); //Body就不要了吧，我们只是需要Headcurl_setopt($curl, CURLOPT_RETURNTRANSFER, 1); //数据存到成字符串吧，别给我直接输出到屏幕了curl_exec($curl); //开始执行啦～$httpcode=curl_getinfo($curl,CURLINFO_HTTP_CODE); //我知道HTTPSTAT码哦～curl_close($curl); //用完记得关掉他echo $httpcode;//耗时 0.45~0.53

/** * 获取远程URL的HTTP状态 * ?* @version 0.0.1 * @Author Chenjl * ?* @param string $url ?远程URL * @param string $data ?ture[返回HTTP状态数组] | false[返回状态数值] * ?* @return mixed */function getHeaders($url,$data=FALSE){ $_headers = get_headers($url,1); if( !$data ){return $_headers;} $curl = curl_init(); ?curl_setopt($curl,CURLOPT_URL,$url);//获取内容url ?curl_setopt($curl,CURLOPT_HEADER,1);//获取http头信息 ?curl_setopt($curl,CURLOPT_NOBODY,1);//不返回html的body信息 ?curl_setopt($curl,CURLOPT_RETURNTRANSFER,1);//返回数据流，不直接输出 ?curl_setopt($curl,CURLOPT_TIMEOUT,30); //超时时长，单位秒 ?curl_exec($curl); ?$rtn= curl_getinfo($curl,CURLINFO_HTTP_CODE); ?curl_close($curl); return $rtn;}

# 调用案例1：getHeaders(‘//www.jb51.net\/\‘,true);# 返回结果：200 // 直接返回HTTP状态码 ?# 调用案例2：getHeaders(‘//www.jb51.net/‘,false);# 返回结果：/*array(10) { [0]=> string(15) "HTTP/1.1 200 OK" ["Server"]=> string(5) "nginx" ["Date"]=> string(29) "Mon, 04 Jul 2016 06:21:35 GMT" ["Content-Type"]=> string(9) "text/html" ["Content-Length"]=> string(5) "26898" ["Last-Modified"]=> string(29) "Mon, 04 Jul 2016 06:16:00 GMT" ["Connection"]=> string(5) "close" ["Vary"]=> string(15) "Accept-Encoding" ["ETag"]=> string(15) ""5779ff20-6912"" ["Accept-Ranges"]=> string(5) "bytes" } */