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")
?>

After everyone runs it, the size should be 4445 bytes.

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.