PHP - Userdetails

PHP sets up a $_SERVER array which contains information such as headers, paths, and script locations. These can be accessed by $_SERVER['keyname'].

Functions.

The following shows how PHP can be used to get some basic details on a session.

Getting user data

<?php
print("Browser: $HTTP_USER_AGENT \n");
print("IP: $REMOTE_ADDR \n");
print("Address: " . gethostbyaddr($REMOTE_ADDR));
?>

Executed code

Browser:
IP:

Warning: gethostbyaddr() [function.gethostbyaddr]: Address is not a valid IPv4 or IPv6 address in E:\kunden\homepages\29\d390184582\www\php_userdetails.php on line 113
Address:

The gethostbyaddr(IPaddress) does a reverse lookup on the IP address (IPaddress), so that the domain name of the host can be displayed. The following gives a more complete coverage of the environ-ment variables:

Session data

<?php
print " CGI: $GATEWAY_INTERFACE";
print " Server:$SERVER_NAME";
print " Software:$SERVER_SOFTWARE";
print " Protocol:$SERVER_PROTOCOL";
print " Request:$REQUEST_METHOD";
print " Query:$QUERY_STRING";
print " Doc:$DOCUMENT_ROOT";
print " Remote IP:$REMOTE_ADDR";
print " Remote port:$REMOTE_PORT";
print " Sever port:$SERVER_PORT";
print " Remote agent:$HTTP_USER_AGENT";
print " URI:$REQUEST_URI";
?>

Executed code

CGI:
Server:
Software:
Protocol:
Request:
Query:
Doc:
Remote IP:
Remote port:
Sever port:
Remote agent:
URI:

This could be implemented as follows:

HTTP parameters

<?php
print " HTTP Accept: $HTTP_ACCEPT";
print " HTTP Charset:$HTTP_ACCEPT_CHARSET";
print " HTTP Encoding:$HTTP_ACCEPT_ENCODING";
print " HTTP Language:$HTTP_ACCEPT_LANGUAGE";
print " HTTP Connection:$HTTP_CONNECTION";
print " HTTP Host:$HTTP_HOST";
print " HTTP Referer:$HTTP_REFERER";
?>

Executed code

HTTP Accept:
HTTP Charset:
HTTP Encoding:
HTTP Language:
HTTP Connection:
HTTP Host:
HTTP Referer:

There are also several core constants, such as __FILE__ (which shows the filename of the script being processed), PHP_VERSION (the PHP version) and PHP_OS (the PHP operating system), as given next.

Environment

<?php
print " File is " . __FILE__;
print " PHP Version is " . PHP_VERSION;
print " Operating System is " . PHP_OS;
?>

Executed code

File is E:\kunden\homepages\29\d390184582\www\php_userdetails.php
PHP Version is 5.3.5
Operating System is WINNT

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PHP - Userdetails

Getting user data

Executed code

Session data

Executed code

CGI: Server:Software:Protocol:Request:Query:Doc:Remote IP:Remote port:Sever port:Remote agent:URI:

HTTP parameters

Executed code

Environment

Executed code

File is E:\kunden\homepages\29\d390184582\www\php_userdetails.phpPHP Version is 5.3.5Operating System is WINNT

CGI:
Server:
Software:
Protocol:
Request:
Query:
Doc:
Remote IP:
Remote port:
Sever port:
Remote agent:
URI:

File is E:\kunden\homepages\29\d390184582\www\php_userdetails.php
PHP Version is 5.3.5
Operating System is WINNT