How to extend PHP functions using SinonPHP?

SinonPHP allows extending or overriding PHP functions and methods for unit testing or customizing code behavior. It provides the following main functions: Extension functions: Use the SinonPHP\stub function to extend existing PHP functions. Extension methods: Use SinonPHP\stub scope extension class methods. Override functions and methods: Use the SinonPHP\override function or method to override a PHP function or class method.

How to use SinonPHP to extend PHP functions

SinonPHP is a PHP extension that allows you to extend or overwrite existing PHP functions and methods to unit test or customize code behavior.

Installation

Use Composer to install SinonPHP:

composer require sinonphp/sinonphp

Extension function

To extend a PHP function , please use the SinonPHP\stub function:

$stub = SinonPHP\stub::create()
    ->spy('strtotime'); // 扩展 strtotime 函数

You can use the $stub object to set the behavior of the stub, for example:

$stub->returns(new DateTime('now')); // 返回当前时间

Extension method

To extend a class method, use SinonPHP\stubScope:

$stub = SinonPHP::stub()
    ->extends('DateTime')
    ->method('format'); // 扩展 DateTime::format 方法

Override functions and methods

To override a PHP function or class method, please use SinonPHP\overrideFunction or method:

SinonPHP\override('strtotime', function($timestamp) {
    return new DateTime('now'); // 覆盖 strtotime 函数
});

SinonPHP::override('DateTime')->method('format')
    ->implementation(function() {
        return '当前时间: ' . $this->format('Y-m-d H:i:s');
    }); // 覆盖 DateTime::format 方法

Practical case

Test date conversion function

use SinonPHP\stub;

$stub = stub::create()
    ->spy('strtotime');

$result = strtotime('tomorrow');

$stub->assertCalledOnce(); // 断言 strtotime 被调用一次

Customized output date format

use SinonPHP\override;

override('DateTime')->method('format')
    ->implementation(function() {
        return '格式化日期: ' . $this->format('Y-m-d H:i:s');
    });

$date = new DateTime('now');

echo $date->format('d-m-Y'); // 输出: 格式化日期: dd-mm-YYYY

The above is the detailed content of How to extend PHP functions using SinonPHP?. For more information, please follow other related articles on the PHP Chinese website!