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fsockopen 实例函数

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2016-06-08 17:28:371075browse
<script>ec(2);</script>

我们经常会采集其它网站上的内容,以前有讲过用fopen,filecontent,curl等函数实例,今天我们就来fsockopen来实现这种读取远程 服务器上的图片方法吧。

function getFileSize($url){ 
 $url = parse_url($url);
 if($fp = @fsockopen($url['host'],empty($url['port'])?80:$url['port'],$error)){
  fputs($fp,"GET ".(empty($url['path'])?'/':$url['path'])." HTTP/1.1rn");
  fputs($fp,"Host:$url[host]rnrn");
  while(!feof($fp)){
   $tmp = fgets($fp);
   if(trim($tmp) == ''){
    break;
   }else if(preg_match('/Content-Length:(.*)/si',$tmp,$arr)){
    return trim($arr[1]);
   }
  }
  return null;
 }else{
  return null;
 }
}
?>


  调用方法很简单,代码如下:
echo getFileSize(http://www.111cn.net/banner/banner.gif/)
?>

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