Don't use deprecated string interpolation syntax.

michael-grunder · michael-grunder · commit 3dbc2bd814f1 · 2024-03-18T15:14:18.000-07:00
diff --git a/tests/TestSuite.php b/tests/TestSuite.php
@@ -239,7 +239,7 @@ private static function findFile($path, $file) {
 
     /* Small helper method that tries to load a custom test case class */
     public static function loadTestClass($class) {
-        $filename = "${class}.php";
+        $filename = "{$class}.php";
 
         if (($sp = getenv('PHPREDIS_TEST_SEARCH_PATH'))) {
             $fullname = self::findFile($sp, $filename);
