diff --git a/bin/functionMetadata_original.php b/bin/functionMetadata_original.php
index e3559e2827..78ac65db29 100644
--- a/bin/functionMetadata_original.php
+++ b/bin/functionMetadata_original.php
@@ -315,11 +315,11 @@
 	'SplFileObject::ftruncate' => ['hasSideEffects' => true],
 	'SplFileObject::fwrite' => ['hasSideEffects' => true],
 
-	'SplFixedArray::extract' => ['hasSideEffects' => true],
+	'SplFixedArray::setSize' => ['hasSideEffects' => true],
 
-	'SplHead::extract' => ['hasSideEffects' => true],
-	'SplHead::insert' => ['hasSideEffects' => true],
-	'SplHead::recoverFromCorruption' => ['hasSideEffects' => true],
+	'SplHeap::extract' => ['hasSideEffects' => true],
+	'SplHeap::insert' => ['hasSideEffects' => true],
+	'SplHeap::recoverFromCorruption' => ['hasSideEffects' => true],
 
 	'SplObjectStorage::addAll' => ['hasSideEffects' => true],
 	'SplObjectStorage::attach' => ['hasSideEffects' => true],
diff --git a/resources/functionMetadata.php b/resources/functionMetadata.php
index f511815ec4..4e50a9f80f 100644
--- a/resources/functionMetadata.php
+++ b/resources/functionMetadata.php
@@ -652,10 +652,10 @@
 	'SplFileObject::fseek' => ['hasSideEffects' => true],
 	'SplFileObject::ftruncate' => ['hasSideEffects' => true],
 	'SplFileObject::fwrite' => ['hasSideEffects' => true],
-	'SplFixedArray::extract' => ['hasSideEffects' => true],
-	'SplHead::extract' => ['hasSideEffects' => true],
-	'SplHead::insert' => ['hasSideEffects' => true],
-	'SplHead::recoverFromCorruption' => ['hasSideEffects' => true],
+	'SplFixedArray::setSize' => ['hasSideEffects' => true],
+	'SplHeap::extract' => ['hasSideEffects' => true],
+	'SplHeap::insert' => ['hasSideEffects' => true],
+	'SplHeap::recoverFromCorruption' => ['hasSideEffects' => true],
 	'SplObjectStorage::addAll' => ['hasSideEffects' => true],
 	'SplObjectStorage::attach' => ['hasSideEffects' => true],
 	'SplObjectStorage::detach' => ['hasSideEffects' => true],
diff --git a/stubs/ArrayObject.stub b/stubs/ArrayObject.stub
index 37714725f4..d569aa00db 100644
--- a/stubs/ArrayObject.stub
+++ b/stubs/ArrayObject.stub
@@ -99,7 +99,7 @@ class SplFixedArray implements Iterator, IteratorAggregate, ArrayAccess, Countab
 	 * @param array<int, TInput> $array
 	 * @return SplFixedArray<TInput>
 	 */
-	public static function fromArray(array $array, bool $save_indexes = true): SplFixedArray { }
+	public static function fromArray(array $array, bool $preserveKeys = true): SplFixedArray { }
 
 	/**
 	 * @return array<int, TValue|null>