php获取http远程文件头信息
作者:admin 日期:2010-10-12
方法一:
get_headers(url);//内置函数
方法二:
function getHttpHead($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/1.1\r\n");
fputs($fp,"Host:$url[host]\r\n\r\n");
$ret = '';
while(!feof($fp)){
$tmp = fgets($fp);
if(trim($tmp) == ''){
break;
}
$ret .= $tmp;
}
return $ret;
}else{
return null;
}
}
示例:echo getHttpHead('http://www.tianzhigang.com');
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