toLog.php

<?
/**
 * LOGGING FUNCTION
 **
 * $str  => string to be logged
 * $type => type of logging:
 *  - access: all non-error ACTIONS generated by users
 *  - user  : same as 'access'
 *  - error : all possible ERRORS generated by users
 *  - admin : all important access/error actions generated by ADMIN
 **
 * returns given string
 **/
function toLog($str,  $type="access", $fid=-1) { // log given string of given type (optional: for given user)

    // TODO: add error handling !!

    $log_path = dirname(__FILE__);

    switch( $type ) {
        case 'error':
            $fname = 'err.log'; break;
        default:
        case 'access':
        case 'user':
            $fname = 'users.log'; break;
        case 'admin':
            $fname = 'admin.log'; break;
    }

    $log_str = date('[Y-m-d H:i:s]') . " " . preg_replace('/\s+/', ' ', str_replace("\n", "", $str))." ip => " . getIP() . ", user-agent => " . $_SERVER['HTTP_USER_AGENT'] . "\n";

    // save to general log files
    $f = fopen($log_path . "/log/" . $fname, "a+");
    fwrite($f, $log_str);
    fclose($f);

    // save to user log file
    if($fid != -1 and $fid != "" and ctype_digit($fid)) {
        $user_log_path = $log_path . '/users-data/' . $fid;
        if(!file_exists($user_log_path)) mkdir($user_log_path);
        $g = fopen($user_log_path . '/log_'.$fid.'.log', "a+");
        fwrite($g, $log_str);
        fclose($g);
    }

    // return logged string
    return $str;
}
/**
 * GETS CURRENT USER IP
 **
 * returns ip of current user
 **/
function getIP() { // get IP of current connection; called from toLog
    $ip = (empty($_SERVER['HTTP_CLIENT_IP']) ?
        (empty($_SERVER['HTTP_X_FORWARDED_FOR']) ?
            $_SERVER['REMOTE_ADDR'] : $_SERVER['HTTP_X_FORWARDED_FOR']) : $_SERVER['HTTP_CLIENT_IP']);
    return str_replace("unknown, ", "", $ip);
}
?>