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
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
For PHP >= 5.3.0 use this:
$hostname = gethostname();
For PHP < 5.3.0 but >= 4.2.0 use this:
$hostname = php_uname('n');
For PHP < 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'));
You could also use...
$hostname = getenv('HTTP_HOST');
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.
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)
I am running PHP version 5.4 on shared hosting and both of these both successfully return the same results:
php_uname('n');
gethostname();
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.