libraries/Log.php

   1 <?php  if ( ! defined('BASEPATH')) exit('No direct script access allowed');
   2 /**
   3  * CodeIgniter
   4  *
   5  * An open source application development framework for PHP 4.3.2 or newer
   6  *
   7  * @package             CodeIgniter
   8  * @author              ExpressionEngine Dev Team
   9  * @copyright   Copyright (c) 2008 - 2009, EllisLab, Inc.
  10  * @license             http://codeigniter.com/user_guide/license.html
  11  * @link                http://codeigniter.com
  12  * @since               Version 1.0
  13  * @filesource
  14  */
  15
  16 // ------------------------------------------------------------------------
  17
  18 /**
  19  * Logging Class
  20  *
  21  * @package             CodeIgniter
  22  * @subpackage  Libraries
  23  * @category    Logging
  24  * @author              ExpressionEngine Dev Team
  25  * @link                http://codeigniter.com/user_guide/general/errors.html
  26  */
  27 class CI_Log {
  28
  29         var $log_path;
  30         var $_threshold = 1;
  31         var $_date_fmt  = 'Y-m-d H:i:s';
  32         var $_enabled   = TRUE;
  33         var $_levels    = array('ERROR' => '1', 'DEBUG' => '2',  'INFO' => '3', 'ALL' => '4');
  34
  35         /**
  36          * Constructor
  37          *
  38          * @access      public
  39          */
  40         function CI_Log()
  41         {
  42                 $config =& get_config();
  43
  44                 $this->log_path = ($config['log_path'] != '') ? $config['log_path'] : BASEPATH.'logs/';
  45
  46                 if ( ! is_dir($this->log_path) OR ! is_really_writable($this->log_path))
  47                 {
  48                         $this->_enabled = FALSE;
  49                 }
  50
  51                 if (is_numeric($config['log_threshold']))
  52                 {
  53                         $this->_threshold = $config['log_threshold'];
  54                 }
  55
  56                 if ($config['log_date_format'] != '')
  57                 {
  58                         $this->_date_fmt = $config['log_date_format'];
  59                 }
  60         }
  61
  62         // --------------------------------------------------------------------
  63
  64         /**
  65          * Write Log File
  66          *
  67          * Generally this function will be called using the global log_message() function
  68          *
  69          * @access      public
  70          * @param       string  the error level
  71          * @param       string  the error message
  72          * @param       bool    whether the error is a native PHP error
  73          * @return      bool
  74          */
  75         function write_log($level = 'error', $msg, $php_error = FALSE)
  76         {
  77                 if ($this->_enabled === FALSE)
  78                 {
  79                         return FALSE;
  80                 }
  81
  82                 $level = strtoupper($level);
  83
  84                 if ( ! isset($this->_levels[$level]) OR ($this->_levels[$level] > $this->_threshold))
  85                 {
  86                         return FALSE;
  87                 }
  88
  89                 $filepath = $this->log_path.'log-'.date('Y-m-d').EXT;
  90                 $message  = '';
  91
  92                 if ( ! file_exists($filepath))
  93                 {
  94                         $message .= "<"."?php  if ( ! defined('BASEPATH')) exit('No direct script access allowed'); ?".">\n\n";
  95                 }
  96
  97                 if ( ! $fp = @fopen($filepath, FOPEN_WRITE_CREATE))
  98                 {
  99                         return FALSE;
 100                 }
 101
 102                 $message .= $level.' '.(($level == 'INFO') ? ' -' : '-').' '.date($this->_date_fmt). ' --> '.$msg."\n";
 103
 104                 flock($fp, LOCK_EX);
 105                 fwrite($fp, $message);
 106                 flock($fp, LOCK_UN);
 107                 fclose($fp);
 108
 109                 @chmod($filepath, FILE_WRITE_MODE);
 110                 return TRUE;
 111         }
 112
 113 }
 114 // END Log Class
 115
 116 /* End of file Log.php */
 117 /* Location: ./system/libraries/Log.php */