implemented

e2e/with-php-level/expected-output.diff

@@ -0,0 +1,18 @@
+1 file with changes
+===================
+
+1) src/SomeClass.php:0
+
+    ---------- begin diff ----------
+@@ @@
+ <?php
+
+-ldap_first_attribute($ldap, $entry, $more);
++ldap_first_attribute($ldap, $entry);
+    ----------- end diff -----------
+
+Applied rules:
+ * RemoveFuncCallArgRector
+
+
+ [OK] 1 file would have been changed (dry-run) by Rector

e2e/with-php-level/rector.php

@@ -6,4 +6,4 @@
 return RectorConfig::configure()
     ->withPaths([__DIR__ . '/src'])
     ->withPhpVersion(PhpVersionFeature::ATTRIBUTES)
-    ->withPhpLevel(10);
+    ->withPhpLevel(2);

e2e/with-php-level/src/SomeClass.php

@@ -1,3 +1,3 @@
 <?php
 
-class SomeClass {}
+ldap_first_attribute($ldap, $entry, $more);

src/Configuration/RectorConfigBuilder.php

@@ -14,6 +14,7 @@
 use Rector\Config\RectorConfig;
 use Rector\Config\RegisteredService;
 use Rector\Configuration\Levels\LevelRulesResolver;
+use Rector\Configuration\Parameter\SimpleParameterProvider;
 use Rector\Console\Notifier;
 use Rector\Contract\Rector\ConfigurableRectorInterface;
 use Rector\Contract\Rector\RectorInterface;
@@ -30,6 +31,7 @@
 use Rector\Symfony\Set\SensiolabsSetList;
 use Rector\Symfony\Set\SymfonySetList;
 use Rector\ValueObject\PhpVersion;
+use Rector\ValueObject\PhpVersionFeature;
 use Symfony\Component\Finder\Finder;
 use Webmozart\Assert\Assert;
 
@@ -290,10 +292,6 @@ public function __invoke(RectorConfig $rectorConfig): void
             $rectorConfig->phpstanConfigs($this->phpstanConfigs);
         }
 
-        if ($this->phpVersion !== null) {
-            $rectorConfig->phpVersion($this->phpVersion);
-        }
-
         if ($this->parallel !== null) {
             if ($this->parallel) {
                 $rectorConfig->parallel(
@@ -922,7 +920,10 @@ public function withPHPStanConfigs(array $phpstanConfigs): self
      */
     public function withPhpVersion(int $phpVersion): self
     {
-        $this->phpVersion = $phpVersion;
+        // trigger from new RectorConfig instance
+        // as too late usage on __invoke() on withPhpSets() or withPhpLevel()
+        (new RectorConfig())->phpVersion($phpVersion);
+
         return $this;
     }