How to use the Hyperf framework for configuration management

Hyperf is an excellent PHP framework. Its main features are fast, flexible and scalable. It is currently widely used in the industry. In the process of developing using the Hyperf framework, we often encounter situations that require configuration management. This article will introduce how to use the Hyperf framework for configuration management and provide specific code examples.

1. The location of the configuration file
When developing using the Hyperf framework, the configuration file is usually placed in the config directory, or can be configured in the .env file. The Hyperf framework will automatically load the configuration file in the config directory and store it in the container for our convenience.

2. Configuration file format
The Hyperf framework supports multiple configuration file formats, including PHP files, JSON files, Yaml files, etc. Among them, PHP files are the most commonly used one. We can define it by returning an array, as shown below:

<?php
return [
     'key1' => 'value1',
     'key2' => 'value2',
     'key3' => [
         'sub_key1' => 'sub_value1',
         'sub_key2' => 'sub_value2',
     ],
];

If we are using a JSON format file, we need to use a format similar to the following.

{
    "key1": "value1",
    "key2": "value2",
    "key3": {
        "sub_key1": "sub_value1",
        "sub_key2": "sub_value2"
    }
}

3. Reading of configuration files
In the Hyperf framework, we can read the configuration information in the configuration file through the Config component. The Config component can be obtained through the container. The code is as follows:

<?php
use HyperfConfigConfig;

$config = make(Config::class);
$value = $config->get('key1');

Among them, the Config component provides get(), has(), set() and other methods for obtaining, checking, and setting configuration information. If we need to obtain sub-configuration information, we can use "." as the separator, as shown below:

<?php
use HyperfConfigConfig;

$config = make(Config::class);
$value = $config->get('key3.sub_key1');

4. Dynamic configuration
In the Hyperf framework, we can modify it through dynamic configuration Configuration information. For example, we can dynamically modify the contents of the configuration file in the following way:

<?php

$config = make(Config::class);
$config->set('key1', 'new_value1');

5. Monitoring configuration file changes
In the Hyperf framework, we can also achieve real-time modification by monitoring configuration file changes. Configuration information function. We can enable the monitoring function by setting specific variables in the configuration file. The code is as follows:

<?php
return [
    'config_loader' => [
        'enable_dotenv' => true,
        'use_standalone_process' => false,
        'ignore_annotations' => [],
        'ignore_consolidation' => [],
        'exclude' => [
            '.git',
            '.svn',
            'vendor',
            'runtime',
        ],
        'config_cache_enable' => true,
        'config_cache_file' => BASE_PATH . '/runtime/container/config.cache.php',
        'watch_files' => [
            BASE_PATH . '/config/autoload',
            BASE_PATH . '/.env',
            BASE_PATH . '/config/autoload/*-config.php',
        ],
    ],
];

Among them, the watch_files array represents the list of files that need to be monitored. We can monitor file changes in the following ways:

<?php
use HyperfEventContractListenerInterface;
use HyperfFrameworkEventOnWorkerStart;

/**
 * @Listener
 */
class ConfigFileListener implements ListenerInterface
{
    /**
     * {@inheritdoc}
     */
    public function listen(): array
    {
        return [
            OnWorkerStart::class,
        ];
    }

    /**
     * {@inheritdoc}
     */
    public function process(object $event)
    {
        $container = ApplicationContext::getContainer();
        $watcher = $container->get(ConfigFileWatcher::class);
        $watcher->watch();
    }
}

Finally, we can obtain configuration information in the following ways:

<?php
use HyperfConfigConfig;

$config = make(Config::class);
$config->set('key1', 'new_value1');

$dispatcher = ApplicationContext::getContainer()->get(EventDispatcherInterface::class);
$dispatcher->dispatch(new OnConfigurationChanged($config));

$value = $config->get('key1');

6. Conclusion
Through the explanation of this article, we You have learned how to use the Hyperf framework for configuration management, and mastered the methods of dynamic configuration and monitoring configuration file changes. If you want to learn more about the features and usage of the Hyperf framework, it is recommended to refer to the official documentation, or use the components and extensions officially provided by Hyperf for related development.

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