interface/modules/zend_modules/library/Zend/Log/Processor/Backtrace.php

   1 <?php
   2 /**
   3  * Zend Framework (http://framework.zend.com/)
   4 *
   5 * @link      http://github.com/zendframework/zf2 for the canonical source repository
   6 * @copyright Copyright (c) 2005-2013 Zend Technologies USA Inc. (http://www.zend.com)
   7 * @license   http://framework.zend.com/license/new-bsd New BSD License
   8 */
   9
  10 namespace Zend\Log\Processor;
  11
  12 class Backtrace implements ProcessorInterface
  13 {
  14     /**
  15      * Maximum stack level of backtrace (PHP > 5.4.0)
  16      * @var int
  17      */
  18     protected $traceLimit = 10;
  19
  20     /**
  21      * Classes within this namespace in the stack are ignored
  22      * @var string
  23      */
  24     protected $ignoredNamespace = 'Zend\\Log';
  25
  26     /**
  27      * Adds the origin of the log() call to the event extras
  28      *
  29      * @param array $event event data
  30      * @return array event data
  31     */
  32     public function process(array $event)
  33     {
  34         $trace = $this->getBacktrace();
  35
  36         array_shift($trace); // ignore $this->getBacktrace();
  37         array_shift($trace); // ignore $this->process()
  38
  39         $i = 0;
  40         while (isset($trace[$i]['class'])
  41                && false !== strpos($trace[$i]['class'], $this->ignoredNamespace)
  42         ) {
  43             $i++;
  44         }
  45
  46         $origin = array(
  47             'file'     => isset($trace[$i-1]['file'])   ? $trace[$i-1]['file']   : null,
  48             'line'     => isset($trace[$i-1]['line'])   ? $trace[$i-1]['line']   : null,
  49             'class'    => isset($trace[$i]['class'])    ? $trace[$i]['class']    : null,
  50             'function' => isset($trace[$i]['function']) ? $trace[$i]['function'] : null,
  51         );
  52
  53         $extra = $origin;
  54         if (isset($event['extra'])) {
  55             $extra = array_merge($origin, $event['extra']);
  56         }
  57         $event['extra'] = $extra;
  58
  59         return $event;
  60     }
  61
  62     /**
  63      * Provide backtrace as slim as posible
  64      *
  65      * @return  array:
  66      */
  67     protected function getBacktrace()
  68     {
  69         if (version_compare(PHP_VERSION, '5.4.0') >= 0) {
  70             return debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS, $this->traceLimit);
  71         }
  72
  73         if (version_compare(PHP_VERSION, '5.3.6') >= 0) {
  74             return debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS);
  75         }
  76
  77         return debug_backtrace();
  78     }
  79 }