3v4l.org

run code in 300+ PHP versions simultaneously
<?php namespace Foo\Bar; trait Baz { } namespace Drupal\Tests; // In order to manage different method signatures between PHPUnit versions, we // dynamically load a compatibility trait dependent on the PHPUnit runner // version. if (!trait_exists(PhpunitVersionDependentTestCompatibilityTrait::class, FALSE)) { $x = 'Bar'; class_alias("Foo\\$x\Baz", PhpunitVersionDependentTestCompatibilityTrait::class); } /** * Makes Drupal's test API forward compatible with multiple versions of PHPUnit. */ trait PhpunitCompatibilityTrait { use PhpunitVersionDependentTestCompatibilityTrait; } $ref = new \ReflectionClass(PhpunitCompatibilityTrait::class); var_dump($ref->getStartLine());
based on 8gRAB
Output for 7.3.0 - 7.3.25, 7.4.0 - 7.4.13, 8.0.0
int(22)