WP / inc / utils / debug.inc.php

<?php

//----------------------------------------------
//               Debugger
//----------------------------------------------
class Debugger implements IDebug{


   private $_prepared = false;
   private $_debugFile ='';
   private $_buffer ='';
   private $_debugMode = 0;

   //---------------------------------
   private function isDebugFile() {

      return (bool)$this->_debugFile;
   }
   //---------------------------------
   private function prepared() {

      if ($this->_prepared)
         return true;

       if (isset($_SESSION['debug_prepared'])) {

          if (isset($_SESSION['debug_file']))
             $this->_debugFile = $_SESSION['debug_file'];

          $this->_prepared = true;
          return true;
       }

       return false;
   }
   //-------------------------------------------------save session variable
   private function save_to_session($name,$value) {

       if (function_exists('session_status')) {
         if (session_status()==PHP_SESSION_ACTIVE)
            $_SESSION[$name] = $value;
            }
       else
          if (session_id()!=='')
             $_SESSION[$name] = $value;
   }

   //--------------------------------- prepare file
   private function prepare_file() {

      $DS = DIRECTORY_SEPARATOR;
      $ROOT = dirname(__FILE__);

      if (!file_exists($ROOT.$DS.'logs'))
         mkdir ($ROOT.$DS.'logs');

      $this->_debugFile = $ROOT.$DS.'logs'.$DS.'debug_'.date('d_m_Y_H_i_s').rand(100,500).'.txt';
      $this->save_to_session('debug_file', $this->_debugFile);

   }

   //------------------------------------ output buffer
   private function outputBuffer() {

      if ($this->isDebugFile()) {

         $link = substr($this->_debugFile, strpos($this->_debugFile, 'logs'.DS));
         echo 'debug information in file: <a href="'.$link.'">'.$link.'</a>';
      }
      else
         echo '<h2>debug information</h2><div style="font-family:courier new">'.$this->_buffer.'</div>';
   }

   //--------------------------------- prepare debugger
   private function prepare() {

      if ($this->_debugMode==0)
         return;

      if ($this->prepared())
         return;

      error_reporting(E_ALL);
      ini_set('display_errors','On');

      set_error_handler (array($this,'errorHandler'));
      set_exception_handler (array($this,'exceptionHandler'));
      register_shutdown_function (array($this,'shutdownHandler'));

      if ($this->_debugMode>1)
         $this->prepare_file();

      $this->_buffer = '';
      $this->_prepared = true;
      $this->save_to_session('debug_prepared', $this->_prepared);
   }

   //--------------------------------- reset debugger
   public function reset() {

      if (isset($_SESSION['debug_prepared']))
         unset ($_SESSION['debug_prepared']);

      if (isset($_SESSION['debug_file']))
         unset ($_SESSION['debug_file']);

      $this->_debugFile = '';
      $this->_prepared = false;
   }
   //------------------------------------ error handler
   public function errorHandler($number, $message, $file, $line) {

      echo '<h2>error occured</h2>';
      echo '<p>'.str_pad('error number: ',30,' ',STR_PAD_RIGHT).$number.'</p>';
      echo '<p>'.str_pad('error message: ',30,' ',STR_PAD_RIGHT).$message.'</p>';
      echo '<p>'.str_pad('error in file: ',30,' ',STR_PAD_RIGHT).$file.'</p>';
      echo '<p>'.str_pad('error in line: ',30,' ',STR_PAD_RIGHT).$line.'</p>';

      $this->outputBuffer();
   }

   //----------------------------------- exception handler

   public function exceptionHandler($exception) {

      echo '<h2>exception occured</h2>';
      echo '<p>'.str_pad('exception code: ',30,' ',STR_PAD_RIGHT).$exception->getCode().'</p>';
      echo '<p>'.str_pad('exception message: ',30).$exception->getMessage().'</p>';
      echo '<p>'.str_pad('exception in file: ',30).$exception->getFile().'</p>';
      echo '<p>'.str_pad('exception in line: ',30).$exception->getLine().'</p>';

      //echo '<h3>exception trace</h3>';
      //echo '<pre>'.print_r($exception->getTrace(),true).'</pre>';

      $this->outputBuffer();
   }

   //----------------------------------- shutdown handler

   public function shutdownHandler() {

      $error = error_get_last();

      echo '<h2>script finished</h2>';
      echo 'error: <pre>'.print_r($error,true).'</pre>';

      $this->outputBuffer();
   }

   //--------------------------------- handle & write info

   public function writeInfo($info, $className, $method) {

      if ($this->_debugMode==0)
         return;

      $this->prepare();


      $s = str_repeat('-',50)."\r\n";
      $s  .= date('d.m.Y H:i:s').'  class: '.$className.' method: '.$method. "\r\n";
      $s  .= str_repeat('-',50)."\r\n";

      $inf = array();
      if (!is_array($info)) {
         $inf[] = $info;
      } else
         $inf = $info;

      $s .= '<pre>'.print_r($inf, true).'</pre>';

      if ($this->isDebugFile()) {
         if (!file_exists($this->_debugFile))

            $f = fopen ($this->_debugFile,'w');
         else
            $f = fopen ($this->_debugFile,'a');

         fwrite($f, $s);
         fclose($f);
      }

      $this->_buffer .= nl2br($s);
   }

   //--------------------------------- Switch Debug On / Off / File
   public function debugMode($mode) {
      $this->_debugMode = $mode;
   }
}


?>