$_SERVER array

<?php
foreach($_SERVER as $key=>$value){
echo  "$key : $value<br>";

}
?>


HTTP_HOST : 65.181.118.232
HTTP_CONNECTION : keep-alive
HTTP_CACHE_CONTROL : max-age=0
HTTP_UPGRADE_INSECURE_REQUESTS : 1
HTTP_USER_AGENT : Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/53.0.2785.143 Safari/537.36
HTTP_ACCEPT : text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8
HTTP_ACCEPT_ENCODING : gzip, deflate, sdch
HTTP_ACCEPT_LANGUAGE : es-ES,es;q=0.8,en;q=0.6
PATH : /usr/local/bin:/usr/bin:/bin
SERVER_SIGNATURE :

Apache/2.4.6 (Ubuntu) Server at 65.181.118.232 Port 80

SERVER_SOFTWARE : Apache/2.4.6 (Ubuntu)
SERVER_NAME : 65.181.118.232
SERVER_ADDR : 65.181.118.232
SERVER_PORT : 80
REMOTE_ADDR : 148.103.149.6
DOCUMENT_ROOT : /var/www
REQUEST_SCHEME : http
CONTEXT_PREFIX :
CONTEXT_DOCUMENT_ROOT : /var/www
SERVER_ADMIN : webmaster@localhost
SCRIPT_FILENAME : /var/www/test.php
REMOTE_PORT : 50257
GATEWAY_INTERFACE : CGI/1.1
SERVER_PROTOCOL : HTTP/1.1
REQUEST_METHOD : GET
QUERY_STRING :
REQUEST_URI : /test.php
SCRIPT_NAME : /test.php
PHP_SELF : /test.php
REQUEST_TIME_FLOAT : 1477189544.259
REQUEST_TIME : 1477189544