interface/modules/zend_modules/library/Zend/Db/Adapter/Profiler/Profiler.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\Db\Adapter\Profiler;
  11
  12 use Zend\Db\Adapter\StatementContainerInterface;
  13 use Zend\Db\Adapter\Exception;
  14
  15 class Profiler implements ProfilerInterface
  16 {
  17     /**
  18      * @var array
  19      */
  20     protected $profiles = array();
  21
  22     /**
  23      * @var null
  24      */
  25     protected $currentIndex = 0;
  26
  27     /**
  28      * @param string|StatementContainerInterface $target
  29      * @throws \Zend\Db\Adapter\Exception\InvalidArgumentException
  30      * @return Profiler
  31      */
  32     public function profilerStart($target)
  33     {
  34         $profileInformation = array(
  35             'sql' => '',
  36             'parameters' => null,
  37             'start' => microtime(true),
  38             'end' => null,
  39             'elapse' => null
  40         );
  41         if ($target instanceof StatementContainerInterface) {
  42             $profileInformation['sql'] = $target->getSql();
  43             $profileInformation['parameters'] = clone $target->getParameterContainer();
  44         } elseif (is_string($target)) {
  45             $profileInformation['sql'] = $target;
  46         } else {
  47             throw new Exception\InvalidArgumentException(__FUNCTION__ . ' takes either a StatementContainer or a string');
  48         }
  49
  50         $this->profiles[$this->currentIndex] = $profileInformation;
  51
  52         return $this;
  53     }
  54
  55     /**
  56      * @return Profiler
  57      */
  58     public function profilerFinish()
  59     {
  60         if (!isset($this->profiles[$this->currentIndex])) {
  61             throw new Exception\RuntimeException('A profile must be started before ' . __FUNCTION__ . ' can be called.');
  62         }
  63         $current = &$this->profiles[$this->currentIndex];
  64         $current['end'] = microtime(true);
  65         $current['elapse'] = $current['end'] - $current['start'];
  66         $this->currentIndex++;
  67         return $this;
  68     }
  69
  70     /**
  71      * @return array|null
  72      */
  73     public function getLastProfile()
  74     {
  75         return end($this->profiles);
  76     }
  77
  78     /**
  79      * @return array
  80      */
  81     public function getProfiles()
  82     {
  83         return $this->profiles;
  84     }
  85 }