How to perform database migrations in Phalcon?

@larissa 

Phalcon is a PHP web framework that provides a number of tools for building web applications, including database management tools. In Phalcon, you can perform database migrations using the Phalcon Developer Tools, which is a set of command-line tools that provide functionality for generating code, managing database migrations, and more.

Here are the steps to perform database migrations in Phalcon using the Developer Tools:

1. Install the Phalcon Developer Tools. You can install it using Composer by running the following command in your terminal:

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composer require phalcon/devtools

1. Once installed, you can create a new migration file using the following command:

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phalcon migration generate

This will create a new migration file in the app/migrations directory with a timestamped name, such as 20190101120000_my_migration.php.

1. Open the migration file and add the necessary code to perform the database changes you want. You can use Phalcon's database access layer to execute SQL statements or use the ORM to modify tables and data.
2. Once you have written the migration code, you can run the migration using the following command:

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phalcon migration run

This will execute all pending migrations in the app/migrations directory.

That's it! You have now performed a database migration in Phalcon using the Developer Tools.