Revisited: Logging With PHP Page 5

browser.php

<?php
//
// SourceForge: Breaking Down the Barriers to Open Source Development
// Copyright 1999-2000 (c) The SourceForge Crew
// http://sourceforge.net
//
// $Id: tim20001211.php3,v 1.3 2001/05/22 19:22:47 tim Exp $
unset ($BROWSER_AGENT);
unset ($BROWSER_VER);
unset ($BROWSER_PLATFORM);
function browser_get_agent () {
    global $BROWSER_AGENT;
    return $BROWSER_AGENT;
}
function browser_get_version() {
    global $BROWSER_VER;
    return $BROWSER_VER;
}
function browser_get_platform() {
    global $BROWSER_PLATFORM;
    return $BROWSER_PLATFORM;
}
function browser_is_mac() {
    if (browser_get_platform()=='Mac') {
        return true;
    } else {
        return false;
    }
}
function browser_is_windows() {
    if (browser_get_platform()=='Win') {
        return true;
    } else {
        return false;
    }
}
function browser_is_ie() {
    if (browser_get_agent()=='IE') {
        return true;
    } else {
        return false;
    }       
}       
function browser_is_netscape() {
    if (browser_get_agent()=='MOZILLA') {
        return true;
    } else {
        return false;
    }       
}       
/*
    Determine browser and version
*/
if (ereg( 'MSIE ([0-9].[0-9]{1,2})',$HTTP_USER_AGENT,$log_version)) {
    $BROWSER_VER=$log_version[1];
    $BROWSER_AGENT='IE';
} elseif (ereg( 'Opera ([0-9].[0-9]{1,2})',$HTTP_USER_AGENT,$log_version)) {
    $BROWSER_VER=$log_version[1];
    $BROWSER_AGENT='OPERA';
} elseif (ereg( 'Mozilla/([0-9].[0-9]{1,2})',$HTTP_USER_AGENT,$log_version)) {
    $BROWSER_VER=$log_version[1];
    $BROWSER_AGENT='MOZILLA';
} else {
    $BROWSER_VER=0;
    $BROWSER_AGENT='OTHER';
}
/*
    Determine platform
*/
if (strstr($HTTP_USER_AGENT,'Win')) {
    $BROWSER_PLATFORM='Win';
} else if (strstr($HTTP_USER_AGENT,'Mac')) {
    $BROWSER_PLATFORM='Mac';
} else if (strstr($HTTP_USER_AGENT,'Linux')) {
    $BROWSER_PLATFORM='Linux';
} else if (strstr($HTTP_USER_AGENT,'Unix')) {
    $BROWSER_PLATFORM='Unix';
} else {
    $BROWSER_PLATFORM='Other';
}       
/*
//debug code
echo "nnAgent: $HTTP_USER_AGENT";
echo "nIE: ".browser_is_ie();
echo "nMac: ".browser_is_mac();
echo "nWindows: ".browser_is_windows();
echo "nPlatform: ".browser_get_platform();
echo "nVersion: ".browser_get_version();
echo "nAgent: ".browser_get_agent();
*/
?>

Now you should have most of the code you need to get started. There’s a lot
more you can do with this system, especially if you use it to track ad banners,
clickins and clickouts, and multiple web sites. As your site scales, you may want
to crunch down the activity_log table once a day and store the results in a separate
table.

Here is an attachment file containing the browser
detection and database abstraction libraries.
Happy logging. Be sure to post your enhancements to the comment forms below.

–Tim