Suppose you want to test a simple PHP function using eval-stdin.php . You can pipe the PHP code into the utility like this:

public function testEvalStdin() $code = 'return strlen("hello");'; $result = evalStdin::evaluate($code); $this->assertEquals(5, $result);

As a developer, you're likely familiar with PHPUnit, a widely-used testing framework for PHP. Within the PHPUnit ecosystem, there's a utility called eval-stdin.php that allows for more flexible and dynamic testing. Let's dive into what this utility offers and how it can enhance your testing experience.

echo "<?php return strlen('hello'); ?>" | php vendor/phpunit/phpunit/src/Util/eval-stdin.php This command evaluates the PHP code and returns the result of the strlen() function.

In this example, the evalStdin.php utility is used to evaluate the PHP code and return the result, which is then asserted in the test.

class EvalStdinTest extends TestCase

Here's an example of using eval-stdin.php within a PHPUnit test:

use PHPUnit\Framework\TestCase; use PHPUnit\Util\evalStdin;