diff --git a/src/Symfony/Bridge/PhpUnit/CHANGELOG.md b/src/Symfony/Bridge/PhpUnit/CHANGELOG.md
index 3eb488a121..9c5ef00f19 100644
--- a/src/Symfony/Bridge/PhpUnit/CHANGELOG.md
+++ b/src/Symfony/Bridge/PhpUnit/CHANGELOG.md
@@ -4,8 +4,8 @@ CHANGELOG
 4.1.0
 -----
 
- * Search for `SYMFONY_PHPUNIT_REMOVE` env var in `phpunit.xml` then
-   `phpunit.xml.dist`
+ * Search for `SYMFONY_PHPUNIT_VERSION`, `SYMFONY_PHPUNIT_REMOVE`,
+   `SYMFONY_PHPUNIT_DIR` env var in `phpunit.xml` then in `phpunit.xml.dist`
 
 4.0.0
 -----
diff --git a/src/Symfony/Bridge/PhpUnit/bin/simple-phpunit b/src/Symfony/Bridge/PhpUnit/bin/simple-phpunit
index 3998b5df45..7d40160d18 100755
--- a/src/Symfony/Bridge/PhpUnit/bin/simple-phpunit
+++ b/src/Symfony/Bridge/PhpUnit/bin/simple-phpunit
@@ -15,12 +15,41 @@
 
 error_reporting(-1);
 
+function getEnvVar($name, $default = false) {
+    if (false !== $value = getenv($name)) {
+        return $value;
+    }
+
+    static $phpunitConfig = null;
+    if (null === $phpunitConfig) {
+        if (file_exists('phpunit.xml')) {
+            $phpunitConfigFilename = 'phpunit.xml';
+        } elseif (file_exists('phpunit.xml.dist')) {
+            $phpunitConfigFilename = 'phpunit.xml.dist';
+        }
+        if ($phpunitConfigFilename) {
+            $phpunitConfig = new DomDocument();
+            $phpunitConfig->load($phpunitConfigFilename);
+        } else {
+            $phpunitConfig = false;
+        }
+    }
+    if (false !== $phpunitConfig) {
+        $var = (new DOMXpath($phpunitConfig))->query('//php/env[@name="'.$name.'"]')[0];
+        if ($var) {
+            return $var->getAttribute('value');
+        }
+    }
+
+    return $default;
+}
+
 if (PHP_VERSION_ID >= 70200) {
     // PHPUnit 6 is required for PHP 7.2+
-    $PHPUNIT_VERSION = getenv('SYMFONY_PHPUNIT_VERSION') ?: '6.5';
+    $PHPUNIT_VERSION = getEnvVar('SYMFONY_PHPUNIT_VERSION', '6.5');
 } elseif (PHP_VERSION_ID >= 50600) {
     // PHPUnit 4 does not support PHP 7
-    $PHPUNIT_VERSION = getenv('SYMFONY_PHPUNIT_VERSION') ?: '5.7';
+    $PHPUNIT_VERSION = getEnvVar('SYMFONY_PHPUNIT_VERSION', '5.7');
 } else {
     // PHPUnit 5.1 requires PHP 5.6+
     $PHPUNIT_VERSION = '4.8';
@@ -40,7 +69,7 @@ while (!file_exists($root.'/'.$COMPOSER_JSON) || file_exists($root.'/Deprecation
 }
 
 $oldPwd = getcwd();
-$PHPUNIT_DIR = getenv('SYMFONY_PHPUNIT_DIR') ?: ($root.'/vendor/bin/.phpunit');
+$PHPUNIT_DIR = getEnvVar('SYMFONY_PHPUNIT_DIR', $root.'/vendor/bin/.phpunit');
 $PHP = defined('PHP_BINARY') ? PHP_BINARY : 'php';
 $PHP = escapeshellarg($PHP);
 if ('phpdbg' === PHP_SAPI) {
@@ -51,24 +80,8 @@ $COMPOSER = file_exists($COMPOSER = $oldPwd.'/composer.phar') || ($COMPOSER = rt
     ? $PHP.' '.escapeshellarg($COMPOSER)
     : 'composer';
 
-if (false === $SYMFONY_PHPUNIT_REMOVE = getenv('SYMFONY_PHPUNIT_REMOVE')) {
-    $SYMFONY_PHPUNIT_REMOVE = 'phpspec/prophecy symfony/yaml';
 
-    $phpunitConfigFilename = null;
-    if (file_exists('phpunit.xml')) {
-        $phpunitConfigFilename = 'phpunit.xml';
-    } elseif (file_exists('phpunit.xml.dist')) {
-        $phpunitConfigFilename = 'phpunit.xml.dist';
-    }
-    if ($phpunitConfigFilename) {
-        $xml = new DomDocument();
-        $xml->load($phpunitConfigFilename);
-        $var = (new DOMXpath($xml))->query('//php/env[@name="SYMFONY_PHPUNIT_REMOVE"]')[0];
-        if ($var) {
-            $SYMFONY_PHPUNIT_REMOVE = $var->getAttribute('value');
-        }
-    }
-}
+$SYMFONY_PHPUNIT_REMOVE = getEnvVar('SYMFONY_PHPUNIT_REMOVE', 'phpspec/prophecy symfony/yaml');
 
 if (!file_exists("$PHPUNIT_DIR/phpunit-$PHPUNIT_VERSION/phpunit") || md5_file(__FILE__)."\n".$SYMFONY_PHPUNIT_REMOVE !== @file_get_contents("$PHPUNIT_DIR/.$PHPUNIT_VERSION.md5")) {
     // Build a standalone phpunit without symfony/yaml nor prophecy by default
@@ -157,7 +170,7 @@ if (isset($argv[1]) && 'symfony' === $argv[1] && !file_exists('symfony') && file
     $argv[1] = 'src/Symfony';
 }
 if (isset($argv[1]) && is_dir($argv[1]) && !file_exists($argv[1].'/phpunit.xml.dist')) {
-    // Find Symfony components in plain php for Windows portability
+    // Find Symfony components in plain PHP for Windows portability
 
     $finder = new RecursiveDirectoryIterator($argv[1], FilesystemIterator::KEY_AS_FILENAME | FilesystemIterator::UNIX_PATHS);
     $finder = new RecursiveIteratorIterator($finder);