<?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()

    {

        if ($php = getenv('PHP_PATH')) {

            if (!is_executable($php)) {

                return false;

            }

            return $php;

        }

        $suffixes = DIRECTORY_SEPARATOR == '\\' ? (getenv('PATHEXT') ? explode(PATH_SEPARATOR, getenv('PATHEXT')) : array('.exe', '.bat', '.cmd', '.com')) : array('');

        foreach ($suffixes as $suffix) {

            if (is_executable($php = PHP_BINDIR.DIRECTORY_SEPARATOR.'php'.$suffix)) {

                return $php;

            }

        }

        if ($php = getenv('PHP_PEAR_PHP_BIN')) {

            if (is_executable($php)) {

                return $php;

            }

        }

        return $this->executableFinder->find('php');

    }

}