Detailed introduction to the s() method in thinkphp

In the thinkphp framework, the s method is often used. The function of this method is to obtain the configuration information in the configuration file. In this article, we will explore the s method in thinkphp in detail.

1. The purpose of the s method

The s method is a quick method to obtain configuration information in the thinkphp framework. It can obtain the configuration information in the system configuration file, and also Ability to obtain user-defined configuration information. In the thinkphp framework, we can call the s method in the following two ways:

s($name); 
config($name);

2. Parameters of the s method

The parameter $name in the s method represents the configuration item The name, which can be a string or an array.

• If $name is a string, then it represents the name of a configuration item, for example:

$config = s('database');

In the above code, $config saves the system configuration file The content of the database configuration item in config.php.

• If $name is an array, then it represents the names of multiple configuration items, for example:

$config = s(['database', 'cache']);

In the above code, $config saves the system configuration file The contents of the two configuration items database and cache in config.php. Use of

3. s method

s method can be used to obtain configuration items in the system configuration file or user-defined configuration items. Two examples are given below.

• Get configuration items in the system configuration file

The system configuration file config.php stores some important configuration information, such as database connection information, cache settings, etc. . This configuration information can be easily obtained using the s method. For example:

$config = s('database');

In the above code, $config saves the contents of the database configuration item in the system configuration file.

• Get user-defined configuration items

In addition to the system configuration file, we can also create additional configuration files in the application directory and customize some configuration items . It should be noted that user-defined configuration files have higher priority than system configuration files. For example:

//application/config.php
return [
    'name' => 'ThinkPHP',
    'version' => '5.1.0'
];

Use the s method to obtain these configuration information. For example:

$config = s('config.name');
$version = s('config.version');

In the above code, $config saves the content of the name configuration item in the custom configuration file config.php, and $version saves the content of the version configuration item in the custom configuration file config.php. Content.

4. Summary

In the thinkphp framework, the s method is a very useful method, which can help us quickly obtain configuration information in system and user-defined configuration files , thereby improving development efficiency. It should be noted that when using the s method in an application, you must ensure that the path and name of the configuration file are correct, otherwise it will cause failure to obtain the configuration information.

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