Best way to get hostname with php

Question

I have a php application that is installed on several servers and all of our developers laptops   I need a fast and reliable way to get the server s hostname or some other unique and reliable system identifier   Here s what we have thought of so far    lt    hostname     empty   ENV  HOSTNAME         ENV  HOSTNAME     env  HOSTNAME      gt    lt    hostname   gethostbyaddr   SERVER  SERVER ADDR       gt    lt    hostname   exec  hostname      gt   What do you think

User · Answer

I am running PHP version 5 4 on shared hosting and both of these both successfully return the same results   php uname  n     gethostname

User · Answer

You could also use      hostname   getenv  HTTP HOST

User · Answer

php uname but I am not sure what hostname you want the hostname of the client or server    plus you should use cookie based approach

User · Answer

What about gethostname     Edit   This might not be an option I suppose  depending on your environment   It s new in PHP 5 3   php uname  n   might work as an alternative

User · Answer

The accepted answer gethostname   may infact give you inaccurate value as in my case  gethostname             my-macbook-pro      incorrect    SERVER  host name     mysite git          correct    The value from gethostname   is obvsiously wrong  Be careful with it    Update as corrected by the comment  Host name gives you computer name  not website name  my bad  My result on local machine is  gethostname             my-macbook-pro      which is my machine name    SERVER  host name     mysite git          which is my website name

User · Answer

For PHP    5 3 0 use this    hostname   gethostname     For PHP  lt  5 3 0 but    4 2 0 use this    hostname   php uname  n     For PHP  lt  4 2 0 use this    hostname   getenv  HOSTNAME     if   hostname   hostname   trim  hostname     if   hostname   hostname   exec  echo  HOSTNAME    if   hostname   hostname   preg replace     w  s   w           1   exec  uname -a

[php] Best way to get hostname with php

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