How to use ThinkPHP\Config for configuration management in php?

With the continuous development of the PHP language, ThinkPHP, which is widely used in the PHP back-end framework, is also constantly improving. As business scenarios become increasingly complex, the demand for configuration management in ThinkPHP is also increasing. In this context, ThinkPHP provides rich configuration management functions. Today we will introduce how to implement configuration management through ThinkPHPConfig.

1. Introduction to ThinkPHPConfig

ThinkPHPConfig is a class used to process configuration files in the ThinkPHP framework. Through this class, we can read, modify, add, and delete configuration options in the configuration file. We can also manage multiple configuration files in a unified manner and obtain the merged configuration options.

2. Basic usage of ThinkPHPConfig

1. Loading configuration files

There are two ways to load configuration files using ThinkPHPConfig. One is to use the load function to take the file path as a parameter to load the configuration file. The other is to use the load function with a file name as a parameter, and then search for the file corresponding to the file name in the config directory to load.

For example, create a new config.php file in the thinkphp directory, and then add the following code to the file:

<?php
return [
    'name' => 'ThinkPHP',
    'version' => '5.1.31',
];

Next, we can load the configuration file and obtain the corresponding configuration through the following code Options:

use thinkconfigConfig;

$config = new Config();

// 通过文件路径加载配置文件
$config->load('/path/to/config.php');

// 通过文件名加载配置文件
$config->load('config');

// 获取配置项
$name = $config->get('name'); // ThinkPHP
$version = $config->get('version'); // 5.1.31

2. Reading, modification, addition and deletion of configuration items

The value of a configuration item in the configuration file can be easily read through the get function:

// 获取配置项
$name = $config->get('name'); // ThinkPHP
$version = $config->get('version'); // 5.1.31

The set function can be used to modify the value of a configuration item in the configuration file:

// 修改配置项
$config->set('name', 'PHP');
$config->set('version', '7.4.0');

// 获取修改后的配置项
$name = $config->get('name'); // PHP
$version = $config->get('version'); // 7.4.0

In addition, we can also add a new configuration item through the add function:

// 新增配置项
$config->add('author', 'Mike'); 

// 获取新增的配置项
$author = $config->get('author'); // Mike

If you want to delete a configuration item, you can also use the remove function:

// 删除配置项
$config->remove('author');

// 获取删除后的配置项
$author = $config->get('author'); // null

3. Advanced usage of ThinkPHPConfig

1. Merge of configuration items

In complex business scenarios, sometimes it is necessary to reference multiple configuration files, such as database configuration, file upload configuration, API service configuration, etc. If there are the same configuration items in each configuration file, and the values ​​of different configuration items have certain differences, how should we deal with this situation?

At this time, you can use the merge function of ThinkPHPConfig to achieve unified management of multiple configuration files.

For example, create a database.php file and an upload.php file in the config directory, the code is as follows:

database.php

<?php

return [
    'hostname' => 'localhost',
    'database' => 'thinkphp',
    'username' => 'root',
    'password' => '123456',
];

upload.php

<?php

return [
    'max_size' => 2048,
    'allowed_types' => 'jpg,png,gif',
];

We can merge the above two configuration files in the following way:

// 合并配置文件
$config->load('database,upload');

// 获取合并后的配置项
$hostname = $config->get('database.hostname'); 
$database = $config->get('database.database'); 
$max_size = $config->get('upload.max_size'); 
$allowed_types = $config->get('upload.allowed_types'); 

2. Support dynamically configured closure function

Sometimes we want dynamic Set the value of the configuration item, for example, by reading a database or other external data source to achieve dynamic configuration. At this time, we can use the closure function provided by ThinkPHPConfig to support implementation.

For example, we can create a new cache.php file in the config directory and set the following cache configuration items:

<?php

return [
    'type' => 'redis',
    'host' => 'localhost',
    'port' => '6379',
    'timeout' => 3600,
    'password' => '',
    'prefix' => 'think:',
    // 动态设置缓存的过期时间
    'expire' => function() {
        return time() + 60 * 10;
    },
];

Then, we can read the configuration items in the code in the following way Value of expire:

$expire = $config->get('cache.expire'); // 返回闭包函数的执行结果

3. Supports multiple configuration file formats

In addition to supporting configuration files in PHP format, ThinkPHPConfig also supports configuration files in other formats, such as INI format , XML format, YAML format, JSON format, etc.

For example, in the config directory, we can create a new redis.ini file with the following code:

;redis配置
[type] = redis
[host] = localhost
[port] = 6379
[password] =
[prefix] = think:

Then, we can load the INI format configuration file through the following code:

$config->load('redis', 'ini');

4. Summary

The above is the basic usage and advanced usage of using ThinkPHPConfig for configuration management. As an indispensable component in the ThinkPHP framework, ThinkPHPConfig can manage our configuration files conveniently, flexibly and efficiently, helping us better focus on the development of the business itself. I hope this article can be helpful to everyone!

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