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 <?php
 /**
  * Zend Framework
  *
  * LICENSE
  *
  * This source file is subject to the new BSD license that is bundled
  * with this package in the file LICENSE.txt.
  * It is also available through the world-wide-web at this URL:
  * http://framework.zend.com/license/new-bsd
  * If you did not receive a copy of the license and are unable to
  * obtain it through the world-wide-web, please send an email
  * to license@zend.com so we can send you a copy immediately.
  *
  * @category   Zend
  * @package    Zend_Debug
  * @copyright  Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
  * @license    http://framework.zend.com/license/new-bsd     New BSD License
  * @version    $Id$
  */
 
 /**
  * Concrete class for generating debug dumps related to the output source.
  *
  * @category   Zend
  * @package    Zend_Debug
  * @copyright  Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
  * @license    http://framework.zend.com/license/new-bsd     New BSD License
  */
 
 class Zend_Debug
 {
 
     /**
      * @var string
      */
     protected static $_sapi = null;
 
     /**
      * Get the current value of the debug output environment.
      * This defaults to the value of PHP_SAPI.
      *
      * @return string;
      */
     public static function getSapi()
     {
         if (self::$_sapi === null) {
             self::$_sapi = PHP_SAPI;
         }
         return self::$_sapi;
     }
 
     /**
      * Set the debug ouput environment.
      * Setting a value of null causes Zend_Debug to use PHP_SAPI.
      *
      * @param string $sapi
      * @return void;
      */
     public static function setSapi($sapi)
     {
         self::$_sapi = $sapi;
     }
 
     /**
      * Debug helper function.  This is a wrapper for var_dump() that adds
      * the <pre /> tags, cleans up newlines and indents, and runs
      * htmlentities() before output.
      *
      * @param  mixed  $var   The variable to dump.
      * @param  string $label OPTIONAL Label to prepend to output.
      * @param  bool   $echo  OPTIONAL Echo output if true.
      * @return string
      */
     public static function dump($var, $label=null, $echo=true)
     {
         // format the label
         $label = ($label===null) ? '' : rtrim($label) . ' ';
 
         // var_dump the variable into a buffer and keep the output
         ob_start();
         var_dump($var);
         $output = ob_get_clean();
 
         // neaten the newlines and indents
         $output = preg_replace("/\]\=\>\n(\s+)/m", "] => ", $output);
         if (self::getSapi() == 'cli') {
             $output = PHP_EOL . $label
                     . PHP_EOL . $output
                     . PHP_EOL;
         } else {
             if(!extension_loaded('xdebug')) {
                 $flags = ENT_QUOTES;
                 // PHP 5.4.0+
                 if (defined('ENT_SUBSTITUTE')) {
                     $flags = ENT_QUOTES | ENT_SUBSTITUTE;
                 }
                 $output = htmlspecialchars($output, $flags);
             }
 
             $output = '<pre>'
                     . $label
                     . $output
                     . '</pre>';
         }
 
         if ($echo) {
             echo($output);
         }
         return $output;
     }
 
 }