Hikvision hard disk video recorder remote php function to obtain remote file size

Copy code The code is as follows:

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;
}
}
//Call method
echo getFileSize("http:/ /www.jb51.net/images/logo.gif")
?>

The above introduces the PHP function for obtaining the remote file size of Hikvision hard disk video recorder remotely, including the remote aspects of Hikvision hard disk video recorder. I hope it will be helpful to friends who are interested in PHP tutorials.