php think 

migrate

  migrate:create     Create a new migration ///创建

  migrate:rollback   Rollback the last or to a specific migration //回滚

  migrate:run        Migrate the database //执行

  migrate:status     Show migration status //状态查看

optimize

  optimize:autoload  Optimizes PSR0 and PSR4 packages to be loaded wit

h classmaps too, good for production.//朗读优化PSR0和PSR4软件包，也可以通过类映射加载，有利于生产。

  optimize:config    Build config and common file cache.//构建公共配置文件缓存

  optimize:route     Build route cache.//构建路由缓存

  optimize:schema    Build database schema cache. //构建数据库构建缓存

seed

  seed:create        Create a new database seeder  //创建新的数据填充器

  seed:run           Run database seeders //运行填充器

#创建迁移类，首字母必须为大写

php think migrate:create Users

参考：　http://docs.phinx.org/en/latest/index.html

注意：

1. Please be aware that when a change method exists, Phinx will automatically ignore the up and down methods. If you need to use these methods it is recommended to create a separate migration file.
   当change方法存在时，将会自动忽略up /down 方法，如果想要生效需要单独创建文件；
2. When creating or updating tables inside a change() method you must use the Table create()and update() methods. Phinx cannot automatically determine whether a save() call is creating a new table or modifying an existing one.
   在change()方法内创建或更新表时，必须使用表create()和update()方法。Phinx无法自动确定save()是创建新表还是修改现有表。
3. Phinx 只能撤销 createTable / renameTable / addColumn / renameColumn / addIndex / addForeignKey 命令；

—— Phinx支持在数据库表上创建外键约束。让我们在示例表中添加一个外键：

<?php

use Phinx\Migration\AbstractMigration;

class MyNewMigration extends AbstractMigration

{

    /**

     * Migrate Up.

     */

    public function up()

    {

        $table = $this->table('tags');

        $table->addColumn('tag_name', 'string')

              ->save();

        $refTable = $this->table('tag_relationships');

        $refTable->addColumn('tag_id', 'integer', ['null' => true])

                 ->addForeignKey('tag_id', 'tags', 'id', ['delete'=> 'SET_NULL', 'update'=> 'NO_ACTION'])

                 ->save();

    }

    /**

     * Migrate Down.

     */

    public function down()

    {

    }

}

——有效列类型

In addition, the MySQL adapter supports enum, set and blob column types.

In addition, the Postgres adapter supports json, jsonb, uuid, cidr, inet and macaddr column types (PostgreSQL 9.3 and above).

以下是有效的列选项：对于任何列类型：

For enum and set columns:

For integer and biginteger columns:

For timestamp columns:

朗读您可以使用addTimestamps（）方法将created_at和updated_at时间戳添加到表中。此方法还允许您提供替代名称。可选的第三个参数允许您更改要添加的列的时区选项。此外，您可以使用addTimestampsWithTimezone（）方法，该方法是addTimestamps（）的别名，它始终将第三个参数设置为true（请参阅下面的示例）。

<?php

use Phinx\Migration\AbstractMigration;

class MyNewMigration extends AbstractMigration

{

    /**

     * Migrate Change.

     */

    public function change()

    {

        // Use defaults (without timezones)

        $table = $this->table('users')->addTimestamps()->create();

        // Use defaults (with timezones)

        $table = $this->table('users')->addTimestampsWithTimezone()->create();

        // Override the 'created_at' column name with 'recorded_at'.

        $table = $this->table('books')->addTimestamps('recorded_at')->create();

        // Override the 'updated_at' column name with 'amended_at', preserving timezones.

        // The two lines below do the same, the second one is simply cleaner.

        $table = $this->table('books')->addTimestamps(null, 'amended_at', true)->create();

        $table = $this->table('users')->addTimestampsWithTimezone(null, 'amended_at')->create();

    }

}

For boolean columns:

For string and text columns:

For foreign key definitions:

use Phinx\Db\Adapter\MysqlAdapter;

//...

$table = $this->table('cart_items');

$table->addColumn('user_id', 'integer')

      ->addColumn('product_id', 'integer', ['limit' => MysqlAdapter::INT_BIG])

      ->addColumn('subtype_id', 'integer', ['limit' => MysqlAdapter::INT_SMALL])

      ->addColumn('quantity', 'integer', ['limit' => MysqlAdapter::INT_TINY])

      ->create();

<?php

use Phinx\Migration\AbstractMigration;

class MyNewMigration extends AbstractMigration

{

    /**

     * Change Method.

     */

    public function change()

    {

        $table = $this->table('user');

        $column = $table->hasColumn('username');

        if ($column) {

            // do something

        }

    }

}