[李景山php]每天TP5-20170120|thinkphp5-Process.php-2

    /**     * @var array     */    public static $exitCodes = [// 异常退出 代码        0   => 'OK',// 正常退出        1   => 'General error',// 一般性错误        2   => 'Misuse of shell builtins', // 缺少脚本        126 => 'Invoked command cannot execute',// 执行命令错误        127 => 'Command not found',// 命令没找到        128 => 'Invalid exit argument',// 输入 参数异常        // signals        129 => 'Hangup',// 上行        130 => 'Interrupt',// 中断        131 => 'Quit and dump core',// 退出 并且 打印 内核        132 => 'Illegal instruction',//        133 => 'Trace/breakpoint trap',        134 => 'Process aborted',        135 => 'Bus error: "access to undefined portion of memory object"',        136 => 'Floating point exception: "erroneous arithmetic operation"',        137 => 'Kill (terminate immediately)',        138 => 'User-defined 1',        139 => 'Segmentation violation',        140 => 'User-defined 2',        141 => 'Write to pipe with no one reading',        142 => 'Signal raised by alarm',        143 => 'Termination (request to terminate)',        // 144 - not defined        145 => 'Child process terminated, stopped (or continued*)',        146 => 'Continue if stopped',        147 => 'Stop executing temporarily',        148 => 'Terminal stop signal',        149 => 'Background process attempting to read from tty ("in")',        150 => 'Background process attempting to write to tty ("out")',        151 => 'Urgent data available on socket',        152 => 'CPU time limit exceeded',        153 => 'File size limit exceeded',        154 => 'Signal raised by timer counting virtual time: "virtual timer expired"',        155 => 'Profiling timer expired',        // 156 - not defined        157 => 'Pollable event',        // 158 - not defined        159 => 'Bad syscall',    ];    /**     * 构造方法     * @param string         $commandline 指令     * @param string|null    $cwd         工作目录     * @param array|null     $env         环境变量     * @param string|null    $input       输入     * @param int|float|null $timeout     超时时间     * @param array          $options     proc_open的选项     * @throws \RuntimeException     * @api     */    public function __construct($commandline, $cwd = null, array $env = null, $input = null, $timeout = 60, array $options = [])    {// 命令 工作目录 环境变量 输入 超时时间 选项 数组        if (!function_exists('proc_open')) {// 如果进程 处理函数 不存在 则 报错            throw new \RuntimeException('The Process class relies on proc_open, which is not available on your PHP installation.');        }        $this->commandline = $commandline;// 指令        $this->cwd         = $cwd;// 目录        if (null === $this->cwd && (defined('ZEND_THREAD_SAFE') || '\\' === DS)) {//            // 如果目录为空，并且 定义了 zend_thread_safe 线程安全 并且 不是 windos 下            $this->cwd = getcwd();// 通过获取 工作目录的 方式 进行 获取 数据        }        if (null !== $env) {// 如果环境变量 不为空            $this->setEnv($env);// 设置环境变量        }        $this->input = $input;// 输入获取        $this->setTimeout($timeout);// 设置超时时间        $this->useFileHandles               = '\\' === DS;// 是否使用文本处理        $this->pty                          = false;// 状态        $this->enhanceWindowsCompatibility  = true;// 能够执行窗口命令        $this->enhanceSigchildCompatibility = '\\' !== DS && $this->isSigchildEnabled();// 能够执行 子命令        $this->options                      = array_replace([// 选项            'suppress_errors' => true,            'binary_pipes'    => true        ], $options);    }// 构造函数 就是 进行了 各种 函数的初始化    public function __destruct()// 析构函数    {        $this->stop();    }    public function __clone()// 复制函数    {        $this->resetProcessData();    }    /**     * 运行指令     * @param callback|null $callback     * @return int     */    public function run($callback = null)// 运行 函数    {        $this->start($callback);        return $this->wait();    }