PHP7.4 doesn't have PDOStatement::getIterator()

Author: mbolli

tests/PHPStan/Analyser/nsrt/bug-8886.php

@@ -8,5 +8,12 @@
 function testPDOStatementGetIterator(): void {
     $pdo = new PDO('sqlite::memory:');
     $stmt = $pdo->query('SELECT 1');
-    assertType('Iterator', $stmt->getIterator());
+
+    if (PHP_VERSION_ID >= 80000) {
+        // PHP 8 and above
+        assertType('Iterator', $stmt->getIterator());
+    } else {
+        // Fallback for PHP 7.4
+        assertType('Traversable', $stmt);
+    }
 }