<?php
/** 
 * Logging class: 
 * - contains lopen and lwrite methods 
 * - lwrite will write message to the log file 
 * - first call of the lwrite will open log file implicitly 
 * - message is written with the following format: hh:mm:ss (script name) message 
 */    
    class Logging{  
  // define log file  _ENV["TMP"].
  private $log_file = 'C:\Users\D36B~1\AppData\Local\Temp\logfile.txt';  
  // define file pointer  
  private $fp = null;  
  // write message to the log file  
  public function lwrite($message){  
    // if file pointer doesn't exist, then open log file  
    if (!$this->fp) $this->lopen();  
    // define script name  
    $script_name = pathinfo($_SERVER['PHP_SELF'], PATHINFO_FILENAME);  
    // define current time  
    $time = date('H:i:s');  
    // write current time, script name and message to the log file  
    fwrite($this->fp, "$time ($script_name) $message\n");  
  }  
  // open log file  
  private function lopen(){  
    // define log file path and name  
    $lfile = $this->log_file;  
    // define the current date (it will be appended to the log file name)  
    $today = date('Y-m-d');  
    // open log file for writing only; place the file pointer at the end of the file  
    // if the file does not exist, attempt to create it  
    $this->fp = fopen($lfile . '_' . $today, 'a') or exit("Can't open $lfile!");  
  }  
}
?>
