How can beginners in PHP programming effectively integrate and execute unit tests using the command line interface for a more environment-independent approach?

Beginners in PHP programming can effectively integrate and execute unit tests using the command line interface by utilizing a testing framework like PHPUnit. This allows for writing test cases in PHP code and running them through the command line, providing a more environment-independent approach to testing. 

// Example of a PHPUnit test class
use PHPUnit\Framework\TestCase;

class MyTest extends TestCase {
    public function testAddition() {
        $result = 1 + 2;
        $this->assertEquals(3, $result);
    }
}
```

To run this test class using the command line interface, save it in a file named `MyTest.php` and run the following command in the terminal:

```
phpunit MyTest.php

Keywords

PHP unit testing command line interface environment-independent integration

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