try to remove irrelevant information for phpunit

ext/lib/Version.php

@@ -0,0 +1,69 @@
+<?php
+
+declare(strict_types=1);
+/*
+ * This file is part of PHPUnit.
+ *
+ * (c) Sebastian Bergmann <sebastian@phpunit.de>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace PHPUnit\Runner;
+
+use SebastianBergmann\Version as VersionId;
+use function array_slice;
+use function dirname;
+use function explode;
+use function implode;
+use function strpos;
+
+/**
+ * @no-named-arguments Parameter names are not covered by the backward compatibility promise for PHPUnit
+ */
+final class Version
+{
+    /**
+     * @var string
+     */
+    private static $pharVersion = '';
+
+    /**
+     * @var string
+     */
+    private static $version = '';
+
+    /**
+     * Returns the current version of PHPUnit.
+     */
+    public static function id(): string
+    {
+        if (self::$pharVersion !== '') {
+            return self::$pharVersion;
+        }
+
+        if (self::$version === '') {
+            $cmd = "grep -Eo '\\d+.\\d+.\\d+' --color=never " . __DIR__ . '/../../vendor/phpunit/phpunit/src/Runner/Version.php';
+            self::$version = trim(exec($cmd));
+        }
+
+        return self::$version;
+    }
+
+    public static function series(): string
+    {
+        if (strpos(self::id(), '-')) {
+            $version = explode('-', self::id())[0];
+        } else {
+            $version = self::id();
+        }
+
+        return implode('.', array_slice(explode('.', $version), 0, 2));
+    }
+
+    public static function getVersionString(): string
+    {
+        return 'PHPUnit ' . self::id();
+    }
+}