PHP implementation code to obtain the HTTP status code of the access page

/**
 * 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('//m.sbmmt.com\/\',true);
# 返回结果：200 // 直接返回HTTP状态码
  
# 调用案例2：getHeaders('//m.sbmmt.com',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" 
} 
*/