<?php
  
  /*
   * This file is part of the Symfony package.
   *
   * (c) Fabien Potencier <fabien@symfony.com>
   *
   * For the full copyright and license information, please view the LICENSE
   * file that was distributed with this source code.
   */
  
  namespace Symfony\Component\Process;
  
  /**
   * An executable finder specifically designed for the PHP executable.
   *
   * @author Fabien Potencier <fabien@symfony.com>
   * @author Johannes M. Schmitt <schmittjoh@gmail.com>
   */
  class PhpExecutableFinder
  {
      private $executableFinder;
  
      public function __construct()
      {
          $this->executableFinder = new ExecutableFinder();
      }
  
      /**
       * Finds The PHP executable.
       *
       * @return string|false The PHP executable path or false if it cannot be found
       */
      public function find()
      {
          // HHVM support
          if (defined('HHVM_VERSION') && false !== $hhvm = getenv('PHP_BINARY')) {
              return $hhvm;
          }
  
          // PHP_BINARY return the current sapi executable
          if (defined('PHP_BINARY') && PHP_BINARY && in_array(PHP_SAPI, array('cli', 'cli-server')) && is_file(PHP_BINARY)) {
              return PHP_BINARY;
          }
  
          if ($php = getenv('PHP_PATH')) {
              if (!is_executable($php)) {
                  return false;
              }
  
              return $php;
          }
  
          if ($php = getenv('PHP_PEAR_PHP_BIN')) {
              if (is_executable($php)) {
                  return $php;
              }
          }
  
          $dirs = array(PHP_BINDIR);
          if (defined('PHP_WINDOWS_VERSION_BUILD')) {
              $dirs[] = 'C:\xampp\php\\';
          }
  
          return $this->executableFinder->find('php', false, $dirs);
      }
  }