Get Client Machine Name in PHP

Question

This program only returns the client machine name in localhost only  echo gethostbyaddr   SERVER  REMOTE ADDR      If it is run from an online server  then computer name is not shown and some other information is being shown  So is there anyway to get the computer name in php when the program runs from online server

User · Answer

Try   echo getenv  COMPUTERNAME      This will return your computername

User · Answer

What s this  other information   An IP address   In PHP  you use   SERVER  REMOTE ADDR   to get the IP address of the remote client  then you can use gethostbyaddr   to try and conver that IP into a hostname - but not all IPs have a reverse mapping configured

User · Answer

gethostname   using the IP from   SERVER  REMOTE ADDR   while accessing the script remotely will  return the IP of your internet connection  not your computer

User · Answer

PHP Manual says   gethostname  PHP    5 3 0  gethostname     Gets the host name  Look    lt  php echo gethostname       may output e g   sandie    Or  an option that also works before PHP 5 3 echo php uname  n       may output e g   sandie   gt    http   php net manual en function gethostname php  Enjoy

User · Answer

In opposite to the most comments  I think it is possible to get the client s hostname  machine name  in plain PHP  but it s a little bit  dirty    By requesting  NTLM  authorization via HTTP header     if   isset  headers  AUTHORIZATION       substr  headers  AUTHORIZATION   0 4       NTLM        header  HTTP 1 1 401 Unauthorized        header  WWW-Authenticate  NTLM        exit      You can force the client to send authorization credentials via NTLM format  The NTLM hash sent by the client to server contains  besides the login credtials  the clients machine name  This works cross-browser and PHP only     auth    headers  AUTHORIZATION     if  substr  auth 0 5      NTLM           msg   base64 decode substr  auth  5        if  substr  msg  0  8      NTLMSSPx00               die  error header not recognised         if   msg 8      x01                  msg2    NTLMSSPx00x02   x00x00x00x00                        x00x00x00x00                        x01x02x81x01                        x00x00x00x00x00x00x00x00                        x00x00x00x00x00x00x00x00                        x00x00x00x00x30x00x00x00                header  HTTP 1 1 401 Unauthorized                header  WWW-Authenticate  NTLM   trim base64 encode  msg2                 exit            else if   msg 8      x03                 function get msg str  msg   start   unicode   true                         len    ord  msg  start 1     256    ord  msg  start                         off    ord  msg  start 5     256    ord  msg  start 4                        if   unicode                              return str replace   0       substr  msg   off   len                        else                             return substr  msg   off   len                              user   get msg str  msg  36                domain   get msg str  msg  28                workstation   get msg str  msg  44               print  You are  user from  workstation  domain             And yes  it s not a plain and easy  read the machine name function   because the user is prompted with an dialog  but it s an example  that it is indeed possible  against the other statements here    Full code can be found here  https   en code-bude net 2017 05 07 how-to-read-client-hostname-in-php

User · Answer

Not in PHP  phpinfo 32  contains everything PHP able to know about particular client  and there is no  windows  computer name

[php] Get Client Machine Name in PHP

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