<?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.
*
* @param bool $includeArgs Whether or not include command arguments
*
* @return string|false The PHP executable path or false if it cannot be found
*/
public function find($includeArgs = true)
{
if ($php = getenv('PHP_BINARY')) {
if (!is_executable($php)) {
$command = '\\' === \DIRECTORY_SEPARATOR ? 'where' : 'command -v';
if ($php = strtok(exec($command.' '.escapeshellarg($php)), \PHP_EOL)) {
if (!is_executable($php)) {
return false;
}
} else {
return false;
}
}

if (@is_dir($php)) {
return false;
}

return $php;
}

$args = $this->findArguments();
$args = $includeArgs && $args ? ' '.implode(' ', $args) : '';

// PHP_BINARY return the current sapi executable
if (\PHP_BINARY && \in_array(\PHP_SAPI, ['cgi-fcgi', 'cli', 'cli-server', 'phpdbg'], true)) {
return \PHP_BINARY.$args;
}

if ($php = getenv('PHP_PATH')) {
if (!@is_executable($php) || @is_dir($php)) {
return false;
}

return $php;
}

if ($php = getenv('PHP_PEAR_PHP_BIN')) {
if (@is_executable($php) && !@is_dir($php)) {
return $php;
}
}

if (@is_executable($php = \PHP_BINDIR.('\\' === \DIRECTORY_SEPARATOR ? '\\php.exe' : '/php')) && !@is_dir($php)) {
return $php;
}

$dirs = [\PHP_BINDIR];
if ('\\' === \DIRECTORY_SEPARATOR) {
$dirs[] = 'C:\xampp\php\\';
}

return $this->executableFinder->find('php', false, $dirs);
}

/**
* Finds the PHP executable arguments.
*
* @return array The PHP executable arguments
*/
public function findArguments()
{
$arguments = [];
if ('phpdbg' === \PHP_SAPI) {
$arguments[] = '-qrr';
}

return $arguments;
}
}