什么是 PsySH ?

PsySH 是一个 PHP 的运行时开发平台，交互式调试器和 Read-Eval-Print Loop (REPL)。

说的简单点，就像你用 Chrome 开发者工具的 console 调试你的 JavaScript 代码一样。

• PsySH 官网
• GitHub
• Composer Packagist

安装 PsySH

官网给出了两种方法

• 直接下载(包括git clone 和 普通方式下载)
• Composer安装

我们现在使用 Composer 来进行安装, TP 5.1 所有的扩展功能都是用 Composer 来管理, 所以我们直接使用 Composer 来安装更加方便快捷.

我们在 windows 10 系统在进行安装, 确保你的电脑上已经安装上: PHP 7.0+ Composer.

进入框架根目录 , 输入 ls 命令, 你将看到下方文件 (注意: 请使用 PowerShell 来运行而不是 cmd)

Mode                LastWriteTime         Length Name
----                -------------         ------ ----
d-----        2019/1/24     15:21                .idea
d-----        2019/1/24     15:14                application
d-----        2019/1/22     16:33                config
d-----        2019/1/22     16:33                extend
d-----        2019/1/22     16:33                public
d-----        2019/1/22     16:33                route
d-----        2019/1/24     14:18                runtime
d-----        2019/1/22     16:33                thinkphp
d-----        2019/1/24     14:22                vendor
-a----        2019/1/22     16:33             54 .gitignore
-a----        2019/1/22     16:33           2038 .travis.yml
-a----        2019/1/22     16:33           1070 build.php
-a----        2019/1/22     16:33          32387 CHANGELOG.md
-a----        2019/1/24     15:14            725 composer.json
-a----        2019/1/24     15:14          27908 composer.lock
-a----        2019/1/22     16:33           1822 LICENSE.txt
-a----        2019/1/22     16:33           6613 README.md
-a----        2019/1/22     16:33            823 think

确定进入目录后, 使用 Composer 命令来安装 PsySH

composer require psy/psysh

运行命令后, 出现下方提示则表示安装成功, 对比时注意文章发布时间, 如年代久远则有些许差异.

PS E:\project\ucenter> composer require psy/psysh
Using version ^0.9.9 for psy/psysh
./composer.json has been created
Loading composer repositories with package information
Updating dependencies (including require-dev)
Package operations: 10 installs, 0 updates, 0 removals
  - Installing symfony/polyfill-php72 (v1.10.0): Loading from cache
  - Installing symfony/polyfill-mbstring (v1.10.0): Loading from cache
  - Installing symfony/var-dumper (v4.2.2): Loading from cache
  - Installing symfony/contracts (v1.0.2): Loading from cache
  - Installing symfony/console (v4.2.2): Loading from cache
  - Installing nikic/php-parser (v4.2.0): Loading from cache
  - Installing jakub-onderka/php-console-color (v0.2): Loading from cache
  - Installing jakub-onderka/php-console-highlighter (v0.4): Loading from cache
  - Installing dnoegel/php-xdg-base-dir (0.1): Loading from cache
  - Installing psy/psysh (v0.9.9): Loading from cache
symfony/contracts suggests installing psr/cache (When using the Cache contracts)
symfony/contracts suggests installing psr/container (When using the Service contracts)
symfony/contracts suggests installing symfony/cache-contracts-implementation ()
symfony/contracts suggests installing symfony/service-contracts-implementation ()
symfony/contracts suggests installing symfony/translation-contracts-implementation ()
symfony/console suggests installing psr/log-implementation (For using the console logger)
symfony/console suggests installing symfony/event-dispatcher ()
symfony/console suggests installing symfony/lock ()
symfony/console suggests installing symfony/process ()
psy/psysh suggests installing ext-pcntl (Enabling the PCNTL extension makes PsySH a lot happier :))
psy/psysh suggests installing ext-posix (If you have PCNTL, you'll want the POSIX extension as well.)
psy/psysh suggests installing ext-pdo-sqlite (The doc command requires SQLite to work.)
psy/psysh suggests installing hoa/console (A pure PHP readline implementation. You'll want this if your PHP install doesn't already support readline or libedit.)
Writing lock file
Generating autoload files

在次检查 PsySH 是否安装成功

1. 打开 vendor 文件夹
2. 寻找是否存在 psy\psysh 文件夹
3. 存在则安装成功.

封装到 TP 5.1

引言: 我们将使用 TP 5.1 中的 命令行/自定义指令 功能来封装至框架中. 官方文档:https://www.kancloud.cn/manual/thinkphp5_1/354146

创建一个自定义命令类文件，新建 application/common/command/Psysh.php

<?php
namespace app\common\command;

use Psy\Shell;
use think\console\Command;
use think\console\Input;
use think\console\Output;


class Psysh extends Command
{
    protected function configure()
    {
        $this->setName('Psysh')
            ->setDescription('PHP command');
    }

    protected function execute(Input $input, Output $output)
    {
        // 启动Psysh
        $sh = new Shell();
        $sh->run();
    }
}

配置 application/command.php 文件

return [
    'psysh' => 'app\common\command\Psysh',
];

使用方法

在框架根目录输入命令, 出现下方效果则表示安装成功

PS E:\project\ucenter> php .\think psysh
Psy Shell v0.9.9 (PHP 7.2.4 — cli) by Justin Hileman
>>>

在 PsySH 命令行下我们可以直接使用框架下的类、常量.

使用 PsySH 运行 Db 类查询数据库

确保你的数据库配置是可用的

PS E:\project\ucenter> php .\think psysh
Psy Shell v0.9.9 (PHP 7.2.4 — cli) by Justin Hileman
>>> Db::table('test')->find()
=> [
     "id" => 1,
     "name" => "test1",
   ]
>>>