Run test in phpunit with specific php version

I have installed multiple PHP versions on my Mac and want to run unit-tests against a specific PHP version (or against multipls versions)

Here’s the php versions I have:

$ php --version
  Output: PHP 5.4.23 ...

$ /Applications/MAMP/bin/php/php5.2.17/bin/php --version
  Output: PHP 5.2.17 ...

My test case looks like this:

function test_php_version() {
    $actual = phpversion();
    $expected = '5.2.17';
    $this->assertEquals( $expected, $actual, 'Wrong PHP version!' );
}

When I run the test I get this response:

$ phpunit

  Wrong PHP version!
  Failed asserting that two strings are equal.
  --- Expected
  +++ Actual
  @@ @@
  -'5.2.17'
  +'5.4.24'

$ /Applications/MAMP/bin/php/php5.2.17/bin/php phpunit
  Error: Could not open input file: phpunit

How can I run the tests with the php version 5.2.17?

---

Update:

I discover that PHPUnit does not run with php5.2.17 anymore. So I change my requirements to run unit tests with php5.3.5, which is supported.

Answer

$ /Applications/MAMP/bin/php/php5.2.17/bin/php path/to/phpunit.phar

Create a script e.g. phpunit-using-5.2

#!/bin/sh
set -e

/Applications/MAMP/bin/php/php5.2.17/bin/php path/to/phpunit.phar "$@"

Now you can run it:

$ phpunit-using-5.2

Or you can create a bash alias too.