diff --git a/hphp/system/php.txt b/hphp/system/php.txt
index 76f675e7b..30e61fe6c 100644
--- a/hphp/system/php.txt
+++ b/hphp/system/php.txt
@@ -23,6 +23,13 @@ hphp/system/php/spl/iterators/DirectoryIterator.php
 hphp/system/php/spl/iterators/FilesystemIterator.php
 hphp/system/php/spl/iterators/RecursiveDirectoryIterator.php
 hphp/system/php/spl/file_handling/SplFileObject.php
+hphp/system/php/spl/file_handling/SplTempFileObject.php
+
+hphp/system/php/lang/ArrayAccess.php
+hphp/system/php/lang/Serializeable.php
+hphp/system/php/spl/datastructures/SplDoublyLinkedList.php
+hphp/system/php/spl/datastructures/SplQueue.php
+hphp/system/php/spl/datastructures/SplStack.php
 
 hphp/system/php/spl/interfaces/OuterIterator.php
 hphp/system/php/spl/iterators/IteratorIterator.php
@@ -45,13 +52,12 @@ hphp/system/php/collections/collections.php
 hphp/system/php/dom/DOMException.php
 hphp/system/php/file_system/Directory.php
 hphp/system/php/json/JsonSerializable.php
-hphp/system/php/lang/ArrayAccess.php
 hphp/system/php/lang/ErrorException.php
-hphp/system/php/lang/Serializeable.php
 hphp/system/php/pdo/PDOException.php
 hphp/system/php/reflection/reflection.php
 hphp/system/php/sessions/session_register_shutdown.php
 hphp/system/php/soap/SoapFault.php
+hphp/system/php/spl/datastructures/SplFixedArray.php
 hphp/system/php/spl/datastructures/SplObjectStorage.php
 hphp/system/php/spl/datastructures/SplPriorityQueue.php
 hphp/system/php/spl/iterators/AppendIterator.php
diff --git a/hphp/system/php/spl/datastructures/SplDoublyLinkedList.php b/hphp/system/php/spl/datastructures/SplDoublyLinkedList.php
new file mode 100644
index 000000000..23858d0ce
--- /dev/null
+++ b/hphp/system/php/spl/datastructures/SplDoublyLinkedList.php
@@ -0,0 +1,477 @@
+<?php
+
+class _SplDoublyLinkedListNode {
+  public $data = null;
+  public $next = null;
+  public $prev = null;
+}
+
+// This doc comment block generated by idl/sysdoc.php
+/**
+ * ( excerpt from http://php.net/manual/en/class.spldoublylinkedlist.php )
+ *
+ * The SplDoublyLinkedList class provides the main functionalities of a
+ * doubly linked list.
+ *
+ */
+class SplDoublyLinkedList
+  implements Iterator, ArrayAccess, Countable, Serializable {
+
+  const IT_MODE_LIFO = 2;
+  const IT_MODE_FIFO = 0;
+  const IT_MODE_DELETE = 1;
+  const IT_MODE_KEEP = 0;
+
+  protected $head = null;
+  protected $tail = null;
+  protected $key = 0;
+  protected $current = null;
+  protected $count = 0;
+  protected $mode = 0;
+
+  // This doc comment block generated by idl/sysdoc.php
+  /**
+   * ( excerpt from http://php.net/manual/en/spldoublylinkedlist.bottom.php )
+   *
+   *
+   * @return     mixed   The value of the first node.
+   */
+  public function bottom() {
+    if ($this->head === null) {
+      throw new RuntimeException("Can't shift from an empty datastructure");
+    }
+    return $this->head->data;
+  }
+
+  // This doc comment block generated by idl/sysdoc.php
+  /**
+   * ( excerpt from http://php.net/manual/en/spldoublylinkedlist.top.php )
+   *
+   *
+   * @return     mixed   The value of the last node.
+   */
+  public function top() {
+    if ($this->tail === null) {
+      throw new RuntimeException("Can't pop from an empty datastructure");
+    }
+    return $this->tail->data;
+  }
+
+  // This doc comment block generated by idl/sysdoc.php
+  /**
+   * ( excerpt from http://php.net/manual/en/spldoublylinkedlist.isempty.php
+   * )
+   *
+   *
+   * @return     mixed   Returns whether the doubly linked list is empty.
+   */
+  public function isEmpty() {
+    return !$this->count;
+  }
+
+  // This doc comment block generated by idl/sysdoc.php
+  /**
+   * ( excerpt from http://php.net/manual/en/spldoublylinkedlist.push.php )
+   *
+   * Pushes value at the end of the doubly linked list.
+   *
+   * @value      mixed   The value to push.
+   *
+   * @return     mixed   No value is returned.
+   */
+  public function push($value) {
+    $node = new _SplDoublyLinkedListNode;
+    $node->data = $value;
+
+    if ($this->isEmpty()) {
+      $this->head = $node;
+    } else {
+      $node->prev = $this->tail;
+      $this->tail->next = $node;
+    }
+    $this->tail = $node;
+
+    ++$this->count;
+    return;
+  }
+
+  // This doc comment block generated by idl/sysdoc.php
+  /**
+   * ( excerpt from http://php.net/manual/en/spldoublylinkedlist.pop.php )
+   *
+   *
+   * @return     mixed   The value of the popped node.
+   */
+  public function pop() {
+    $retval = $this->top();
+    $this->tail = $this->tail->prev;
+    --$this->count;
+    return $retval;
+  }
+
+  // This doc comment block generated by idl/sysdoc.php
+  /**
+   * ( excerpt from http://php.net/manual/en/spldoublylinkedlist.unshift.php
+   * )
+   *
+   * Prepends value at the beginning of the doubly linked list.
+   *
+   * @value      mixed   The value to unshift.
+   *
+   * @return     mixed   No value is returned.
+   */
+  public function unshift($value) {
+    $node = new _SplDoublyLinkedListNode;
+    $node->data = $value;
+
+    if ($this->isEmpty()) {
+      $this->head = $this->tail = $node;
+    } else {
+      $node->next = $this->head;
+      $this->head->prev = $node;
+      $this->head = $node;
+    }
+
+    ++$this->count;
+    return;
+  }
+
+  // This doc comment block generated by idl/sysdoc.php
+  /**
+   * ( excerpt from http://php.net/manual/en/spldoublylinkedlist.shift.php )
+   *
+   *
+   * @return     mixed   The value of the shifted node.
+   */
+  public function shift() {
+    $retval = $this->bottom();
+    $this->head = $this->head->next;
+    --$this->count;
+    return $retval;
+  }
+
+
+  // This doc comment block generated by idl/sysdoc.php
+  /**
+   * ( excerpt from http://php.net/manual/en/spldoublylinkedlist.current.php
+   * )
+   *
+   * Get the current doubly linked list node.
+   *
+   * @return     mixed   The current node value.
+   */
+  public function current() {
+    if (!$this->valid()) {
+      return null;
+    }
+    return $this->current->data;
+  }
+
+  // This doc comment block generated by idl/sysdoc.php
+  /**
+   * ( excerpt from http://php.net/manual/en/spldoublylinkedlist.key.php )
+   *
+   * This function returns the current node index
+   *
+   * @return     mixed   The current node index.
+   */
+  public function key() {
+    return $this->key;
+  }
+
+  // This doc comment block generated by idl/sysdoc.php
+  /**
+   * ( excerpt from http://php.net/manual/en/spldoublylinkedlist.next.php )
+   *
+   * Move the iterator to the next node.
+   *
+   * @return     mixed   No value is returned.
+   */
+  public function next() {
+    if ($this->mode & self::IT_MODE_DELETE) {
+      --$this->count;
+      if ($this->current->prev !== null) {
+        $this->current->prev->next = $this->current->next;
+      }
+      if ($this->current->next !== null) {
+        $this->current->next->prev = $this->current->prev;
+      }
+    }
+
+    if ($this->mode & self::IT_MODE_LIFO) {
+      --$this->key;
+      $this->current = $this->current ? $this->current->prev : null;
+    } else {
+      if (!$this->mode & self::IT_MODE_DELETE) {
+        ++$this->key;
+      }
+      $this->current = $this->current ? $this->current->next : null;
+    }
+  }
+
+  // This doc comment block generated by idl/sysdoc.php
+  /**
+   * ( excerpt from http://php.net/manual/en/spldoublylinkedlist.prev.php )
+   *
+   * Move the iterator to the previous node.
+   *
+   * @return     mixed   No value is returned.
+   */
+  public function prev() {
+    if ($this->mode & self::IT_MODE_DELETE) {
+      --$this->count;
+      if ($this->current->prev !== null) {
+        $this->current->prev->next = $this->current->next;
+      }
+      if ($this->current->next !== null) {
+        $this->current->next->prev = $this->current->prev;
+      }
+    }
+
+    if ($this->mode & self::IT_MODE_LIFO) {
+      if (!$this->mode & self::IT_MODE_DELETE) {
+        ++$this->key;
+      }
+      $this->current = $this->current ? $this->current->next : null;
+    } else {
+      --$this->key;
+      $this->current = $this->current ? $this->current->prev : null;
+    }
+  }
+
+  // This doc comment block generated by idl/sysdoc.php
+  /**
+   * ( excerpt from http://php.net/manual/en/spldoublylinkedlist.rewind.php )
+   *
+   * This rewinds the iterator to the beginning.
+   *
+   * @return     mixed   No value is returned.
+   */
+  public function rewind() {
+    if ($this->mode & self::IT_MODE_LIFO) {
+      $this->key = $this->count - 1;
+      $this->current = $this->tail;
+    } else {
+      $this->key = 0;
+      $this->current = $this->head;
+    }
+  }
+
+  // This doc comment block generated by idl/sysdoc.php
+  /**
+   * ( excerpt from http://php.net/manual/en/spldoublylinkedlist.valid.php )
+   *
+   * Checks if the doubly linked list contains any more nodes.
+   *
+   * @return     mixed   Returns TRUE if the doubly linked list contains any
+   *                     more nodes, FALSE otherwise.
+   */
+  public function valid() {
+    return $this->current !== null;
+  }
+
+  // This doc comment block generated by idl/sysdoc.php
+  /**
+   * ( excerpt from
+   * http://php.net/manual/en/spldoublylinkedlist.getiteratormode.php )
+   *
+   *
+   * @return     mixed   Returns the different modes and flags that affect
+   *                     the iteration.
+   */
+  public function getIteratorMode() {
+    return $this->mode;
+  }
+
+  // This doc comment block generated by idl/sysdoc.php
+  /**
+   * ( excerpt from
+   * http://php.net/manual/en/spldoublylinkedlist.setiteratormode.php )
+   *
+   *
+   * @mode       mixed   There are two orthogonal sets of modes that can be
+   *                     set: The direction of the iteration (either one or
+   *                     the other): SplDoublyLinkedList::IT_MODE_LIFO (Stack
+   *                     style) SplDoublyLinkedList::IT_MODE_FIFO (Queue
+   *                     style) The behavior of the iterator (either one or
+   *                     the other): SplDoublyLinkedList::IT_MODE_DELETE
+   *                     (Elements are deleted by the iterator)
+   *                     SplDoublyLinkedList::IT_MODE_KEEP (Elements are
+   *                     traversed by the iterator)
+   *
+   *                     The default mode is:
+   *                     SplDoublyLinkedList::IT_MODE_FIFO |
+   *                     SplDoublyLinkedList::IT_MODE_KEEP
+   *
+   * @return     mixed   No value is returned.
+   */
+  public function setIteratorMode($mode) {
+    $this->mode = $mode;
+  }
+
+
+  // This doc comment block generated by idl/sysdoc.php
+  /**
+   * ( excerpt from
+   * http://php.net/manual/en/spldoublylinkedlist.offsetexists.php )
+   *
+   *
+   * @index      mixed   The index being checked.
+   *
+   * @return     mixed   TRUE if the requested index exists, otherwise FALSE
+   */
+  public function offsetExists($index) {
+    return $index < $this->count;
+  }
+
+  // This doc comment block generated by idl/sysdoc.php
+  /**
+   * ( excerpt from
+   * http://php.net/manual/en/spldoublylinkedlist.offsetget.php )
+   *
+   *
+   * @index      mixed   The index with the value.
+   *
+   * @return     mixed   The value at the specified index.
+   */
+  public function offsetGet($index) {
+    if (!is_int($index) && !is_numeric($index)) {
+      throw new OutOfRangeException("Offset invalid or out of range");
+    }
+    $node = $this->head;
+    for ($i = 0; $i < $index && $node !== null; ++$i) {
+      $node = $node->next;
+    }
+    if (!$node) {
+      throw new OutOfRangeException("Offset invalid or out of range");
+    }
+    return $node->data;
+  }
+
+  // This doc comment block generated by idl/sysdoc.php
+  /**
+   * ( excerpt from
+   * http://php.net/manual/en/spldoublylinkedlist.offsetset.php )
+   *
+   * Sets the value at the specified index to newval.
+   *
+   * @index      mixed   The index being set.
+   * @newval     mixed   The new value for the index.
+   *
+   * @return     mixed   No value is returned.
+   */
+  public function offsetSet($index, $newval) {
+    if ($index === null) {
+      $index = $this->count;
+    }
+    if ($this->isEmpty()) {
+      $node = new _SplDoublyLinkedListNode;
+      $this->head = $node;
+      $this->tail = $node;
+      ++$this->count;
+    }
+    $node = $this->head;
+    for ($i = 0; $i < $index; ++$i) {
+      if ($node->next === null) {
+        ++$this->count;
+        $node->next = new _SplDoublyLinkedListNode;
+        $node->next->prev = $node;
+      }
+      $node = $node->next;
+    }
+    $node->data = $newval;
+  }
+
+  // This doc comment block generated by idl/sysdoc.php
+  /**
+   * ( excerpt from
+   * http://php.net/manual/en/spldoublylinkedlist.offsetunset.php )
+   *
+   * Unsets the value at the specified index.
+   *
+   * @index      mixed   The index being unset.
+   *
+   * @return     mixed   No value is returned.
+   */
+  public function offsetUnset($index) {
+    if (!is_int($index) && !is_numeric($index)) {
+      throw new OutOfRangeException("Offset invalid or out of range");
+    }
+    $node = $this->head;
+    for ($i = 0; $i < $index; ++$i) {
+      if (!$node) {
+        throw new OutOfRangeException("Offset out of range");
+      }
+      $node = $node->next;
+    }
+
+    if (!$node) {
+      throw new OutOfRangeException("Offset out of range");
+    }
+
+    --$this->count;
+    if ($node->prev) {
+      $node->prev->next = $node->next;
+    } else {
+      $this->head = $node->next;
+    }
+
+    if ($node->next) {
+      $node->next->prev = $node->prev;
+    } else {
+      $this->tail = $node->prev;
+    }
+  }
+
+
+  // This doc comment block generated by idl/sysdoc.php
+  /**
+   * ( excerpt from http://php.net/manual/en/spldoublylinkedlist.count.php )
+   *
+   *
+   * @return     mixed   Returns the number of elements in the doubly linked
+   *                     list.
+   */
+  public function count() {
+    return $this->count;
+  }
+
+
+  // This doc comment block generated by idl/sysdoc.php
+  /**
+   * ( excerpt from
+   * http://php.net/manual/en/spldoublylinkedlist.serialize.php )
+   *
+   * Serializes the storage. WarningThis function is currently not
+   * documented; only its argument list is available.
+   *
+   * @return     mixed   The serialized string.
+   */
+  public function serialize() {
+    $data = array();
+    foreach ($this as $val) {
+      $data[] = $val;
+    }
+    return serialize(array($data, $this->mode));
+  }
+
+  // This doc comment block generated by idl/sysdoc.php
+  /**
+   * ( excerpt from
+   * http://php.net/manual/en/spldoublylinkedlist.unserialize.php )
+   *
+   * Unserializes the storage, from SplDoublyLinkedList::serialize().
+   * WarningThis function is currently not documented; only its argument list
+   * is available.
+   *
+   * @serialized mixed   The serialized string.
+   *
+   * @return     mixed   No value is returned.
+   */
+  public function unserialize($serialized) {
+    list($data, $this->mode) = unserialize($serialized);
+    foreach ($data as $elem) {
+      $this->push($elem);
+    }
+  }
+}
diff --git a/hphp/system/php/spl/datastructures/SplFixedArray.php b/hphp/system/php/spl/datastructures/SplFixedArray.php
new file mode 100644
index 000000000..d37121c88
--- /dev/null
+++ b/hphp/system/php/spl/datastructures/SplFixedArray.php
@@ -0,0 +1,260 @@
+<?php
+
+// This doc comment block generated by idl/sysdoc.php
+/**
+ * ( excerpt from http://php.net/manual/en/class.splfixedarray.php )
+ *
+ * The SplFixedArray class provides the main functionalities of array. The
+ * main differences between a SplFixedArray and a normal PHP array is that
+ * the SplFixedArray is of fixed length and allows only integers within the
+ * range as indexes. The advantage is that it allows a faster array
+ * implementation.
+ *
+ */
+class SplFixedArray implements Iterator, ArrayAccess, Countable {
+
+  protected $data = array();
+
+  // This doc comment block generated by idl/sysdoc.php
+  /**
+   * ( excerpt from http://php.net/manual/en/splfixedarray.construct.php )
+   *
+   * Initializes a fixed array with a number of NULL values equal to size.
+   *
+   * @size       mixed   The size of the fixed array. This expects a number
+   *                     between 0 and PHP_INT_MAX.
+   *
+   * @return     mixed   No value is returned.
+   */
+  public function __construct($size = 0) {
+    $this->setSize($size);
+  }
+
+  // This doc comment block generated by idl/sysdoc.php
+  /**
+   * ( excerpt from http://php.net/manual/en/splfixedarray.current.php )
+   *
+   * Get the current array element.
+   *
+   * @return     mixed   The current element value.
+   */
+  public function current() {
+    return current($this->data);
+  }
+
+  // This doc comment block generated by idl/sysdoc.php
+  /**
+   * ( excerpt from http://php.net/manual/en/splfixedarray.key.php )
+   *
+   * Returns the current array index.
+   *
+   * @return     mixed   The current array index.
+   */
+  public function key() {
+    return key($this->data);
+  }
+
+  // This doc comment block generated by idl/sysdoc.php
+  /**
+   * ( excerpt from http://php.net/manual/en/splfixedarray.next.php )
+   *
+   * Move the iterator to the next array entry.
+   *
+   * @return     mixed   No value is returned.
+   */
+  public function next() {
+    next($this->data);
+  }
+
+  // This doc comment block generated by idl/sysdoc.php
+  /**
+   * ( excerpt from http://php.net/manual/en/splfixedarray.rewind.php )
+   *
+   * Rewinds the iterator to the beginning.
+   *
+   * @return     mixed   No value is returned.
+   */
+  public function rewind() {
+    reset($this->data);
+  }
+
+  // This doc comment block generated by idl/sysdoc.php
+  /**
+   * ( excerpt from http://php.net/manual/en/splfixedarray.valid.php )
+   *
+   * Checks if the array contains any more elements.
+   *
+   * @return     mixed   Returns TRUE if the array contains any more
+   *                     elements, FALSE otherwise.
+   */
+  public function valid() {
+    return key($this->data) !== NULL;
+  }
+
+
+  // This doc comment block generated by idl/sysdoc.php
+  /**
+   * ( excerpt from http://php.net/manual/en/splfixedarray.offsetexists.php )
+   *
+   * Checks whether the requested index index exists.
+   *
+   * @index      mixed   The index being checked.
+   *
+   * @return     mixed   TRUE if the requested index exists, otherwise FALSE
+   */
+  public function offsetExists($index) {
+    if (!is_int($index) && !is_numeric($index)) {
+      throw new RuntimeException("Index invalid or out of range");
+    }
+    return $index < count($this->data);
+  }
+
+  private function validateIndex($index) {
+    if ($index >= count($this->data) || $index < 0 ||
+        (!is_int($index) && !is_numeric($index))) {
+      throw new RuntimeException("Index invalid or out of range");
+    }
+  }
+
+  // This doc comment block generated by idl/sysdoc.php
+  /**
+   * ( excerpt from http://php.net/manual/en/splfixedarray.offsetget.php )
+   *
+   * Returns the value at the index index.
+   *
+   * @index      mixed   The index with the value.
+   *
+   * @return     mixed   The value at the specified index.
+   */
+  public function offsetGet($index) {
+    $this->validateIndex($index);
+    return $this->data[$index];
+  }
+
+  // This doc comment block generated by idl/sysdoc.php
+  /**
+   * ( excerpt from http://php.net/manual/en/splfixedarray.offsetset.php )
+   *
+   * Sets the value at the specified index to newval.
+   *
+   * @index      mixed   The index being set.
+   * @newval     mixed   The new value for the index.
+   *
+   * @return     mixed   No value is returned.
+   */
+  public function offsetSet($index, $newval) {
+    $this->validateIndex($index);
+    $this->data[$index] = $newval;
+  }
+
+  // This doc comment block generated by idl/sysdoc.php
+  /**
+   * ( excerpt from http://php.net/manual/en/splfixedarray.offsetunset.php )
+   *
+   * Unsets the value at the specified index.
+   *
+   * @index      mixed   The index being unset.
+   *
+   * @return     mixed   No value is returned.
+   */
+  public function offsetUnset($index) {
+    $this->offsetSet($index, null);
+  }
+
+
+  // This doc comment block generated by idl/sysdoc.php
+  /**
+   * ( excerpt from http://php.net/manual/en/splfixedarray.count.php )
+   *
+   * Returns the size of the array.
+   *
+   * @return     mixed   Returns the size of the array.
+   */
+  public function count() {
+    return count($this->data);
+  }
+
+  // This doc comment block generated by idl/sysdoc.php
+  /**
+   * ( excerpt from http://php.net/manual/en/splfixedarray.setsize.php )
+   *
+   * Change the size of an array to the new size of size. If size is less
+   * than the current array size, any values after the new size will be
+   * discarded. If size is greater than the current array size, the array
+   * will be padded with NULL values.
+   *
+   * @size       mixed   The new array size. This should be a value between 0
+   *                     and PHP_INT_MAX.
+   *
+   * @return     mixed   No value is returned.
+   */
+  public function setSize($size) {
+    if (!is_int($size)) {
+      return;
+    }
+    if ($size < 0) {
+      throw new Exception('array size cannot be less than zero');
+    }
+    if ($size < count($this->data)) {
+      $this->data = array_slice($this->data, 0, $size);
+    } else if ($size > count($this->data)) {
+      $this->data = array_pad($thid->data, $size, null);
+    }
+  }
+
+  // This doc comment block generated by idl/sysdoc.php
+  /**
+   * ( excerpt from http://php.net/manual/en/splfixedarray.getsize.php )
+   *
+   * Gets the size of the array.
+   *
+   * @return     mixed   Returns the size of the array, as an integer.
+   */
+  public function getSize() {
+    return count($this->data);
+  }
+
+  // This doc comment block generated by idl/sysdoc.php
+  /**
+   * ( excerpt from http://php.net/manual/en/splfixedarray.toarray.php )
+   *
+   * Returns a PHP array from the fixed array.
+   *
+   * @return     mixed   Returns a PHP array, similar to the fixed array.
+   */
+  public function toArray() {
+    return $this->data;
+  }
+
+  // This doc comment block generated by idl/sysdoc.php
+  /**
+   * ( excerpt from http://php.net/manual/en/splfixedarray.fromarray.php )
+   *
+   * Import the PHP array array in a new SplFixedArray instance
+   *
+   * @array      mixed   The array to import.
+   * @save_indexes
+   *             mixed   Try to save the numeric indexes used in the original
+   *                     array.
+   *
+   * @return     mixed   Returns an instance of SplFixedArray containing the
+   *                     array content.
+   */
+  public static function fromArray($array, $save_indexes = true) {
+    $fixed_array = new self;
+    if ($save_indexes) {
+      foreach ($array as $key => $value) {
+        if (!is_int($key) || $key < 0) {
+          throw new Exception('array must contain only positive integer keys');
+        }
+        if ($key >= $fixed_array->count()) {
+          $fixed_array->setSize($key + 1);
+        }
+        $fixed_array[$key] = $value;
+      }
+    } else {
+      $fixed_array->data = array_values($array);
+    }
+    return $fixed_array;
+  }
+}
diff --git a/hphp/system/php/spl/datastructures/SplQueue.php b/hphp/system/php/spl/datastructures/SplQueue.php
new file mode 100644
index 000000000..342df814e
--- /dev/null
+++ b/hphp/system/php/spl/datastructures/SplQueue.php
@@ -0,0 +1,72 @@
+<?php
+
+// This doc comment block generated by idl/sysdoc.php
+/**
+ * (excerpt from http://php.net/manual/en/class.splqueue.php)
+ *
+ * The SplQueue class provides the main functionalities of a queue
+ * implemented using a doubly linked list.
+ *
+ */
+class SplQueue extends SplDoublyLinkedList
+  implements Iterator, ArrayAccess, Countable {
+
+  // This doc comment block generated by idl/sysdoc.php
+  /**
+   * (excerpt from http://php.net/manual/en/splqueue.dequeue.php)
+   *
+   * Dequeues value from the top of the queue.
+   *
+   * SplQueue::dequeue() is an alias of SplDoublyLinkedList::shift().
+   *
+   * @return     mixed   The value of the dequeued node.
+   */
+  public function dequeue() {
+    return $this->shift();
+  }
+
+  // This doc comment block generated by idl/sysdoc.php
+  /**
+   * (excerpt from http://php.net/manual/en/splqueue.enqueue.php)
+   *
+   * Enqueues value at the end of the queue.
+   *
+   * SplQueue::enqueue() is an alias of SplDoublyLinkedList::push().
+   *
+   * @value      mixed   The value to enqueue.
+   *
+   * @return     mixed   No value is returned.
+   */
+  public function enqueue($value) {
+    $this->push($value);
+  }
+
+  // This doc comment block generated by idl/sysdoc.php
+  /**
+   * (excerpt from http://php.net/manual/en/splqueue.setiteratormode.php)
+   *
+   *
+   * @mode       mixed   There is only one iteration parameter you can
+   *                     modify. The behavior of the iterator (either one or
+   *                     the other): SplDoublyLinkedList::IT_MODE_DELETE
+   *                     (Elements are deleted by the iterator)
+   *                     SplDoublyLinkedList::IT_MODE_KEEP (Elements are
+   *                     traversed by the iterator)
+   *
+   *                     The default mode is:
+   *                     SplDoublyLinkedList::IT_MODE_FIFO |
+   *                     SplDoublyLinkedList::IT_MODE_KEEP Warning
+   *
+   *                     The direction of iteration can not be changed for
+   *                     SplQueues, it is always
+   *                     SplDoublyLinkedList::IT_MODE_FIFO.
+   *
+   * @return     mixed   No value is returned.
+   */
+  public function setIteratorMode($mode) {
+    if ($mode & self::IT_MODE_LIFO) {
+      throw new RuntimeException('SplQueue can only be used in FIFO mode.');
+    }
+    parent::setIteratorMode($mode);
+  }
+}
diff --git a/hphp/system/php/spl/datastructures/SplStack.php b/hphp/system/php/spl/datastructures/SplStack.php
new file mode 100644
index 000000000..58f4c490d
--- /dev/null
+++ b/hphp/system/php/spl/datastructures/SplStack.php
@@ -0,0 +1,57 @@
+<?php
+
+// This doc comment block generated by idl/sysdoc.php
+/**
+ * (excerpt from http://php.net/manual/en/class.splstack.php)
+ *
+ * The SplStack class provides the main functionalities of a stack
+ * implemented using a doubly linked list.
+ *
+ */
+class SplStack extends SplDoublyLinkedList
+  implements Iterator, ArrayAccess, Countable {
+
+  // This doc comment block generated by idl/sysdoc.php
+  /**
+   * (excerpt from http://php.net/manual/en/splstack.construct.php)
+   *
+   * This constructs a new empty stack.
+   *
+   * This method automatically sets the iterator mode to
+   * SplDoublyLinkedList::IT_MODE_LIFO.
+   *
+   * @return     mixed   No value is returned.
+   */
+  public function __construct() {
+    $this->setIteratorMode(self::IT_MODE_LIFO | self::IT_MODE_KEEP);
+  }
+
+  // This doc comment block generated by idl/sysdoc.php
+  /**
+   * (excerpt from http://php.net/manual/en/splstack.setiteratormode.php)
+   *
+   *
+   * @mode       mixed   There is only one iteration parameter you can
+   *                     modify. The behavior of the iterator (either one or
+   *                     the other): SplDoublyLinkedList::IT_MODE_DELETE
+   *                     (Elements are deleted by the iterator)
+   *                     SplDoublyLinkedList::IT_MODE_KEEP (Elements are
+   *                     traversed by the iterator)
+   *
+   *                     The default mode is 0x2 :
+   *                     SplDoublyLinkedList::IT_MODE_LIFO |
+   *                     SplDoublyLinkedList::IT_MODE_KEEP Warning
+   *
+   *                     The direction of iteration can no longer be changed
+   *                     for SplStacks. Trying to do so will result in a
+   *                     RuntimeException being thrown.
+   *
+   * @return     mixed   No value is returned.
+   */
+  public function setIteratorMode($mode) {
+    if ($mode & self::IT_MODE_FIFO) {
+      throw new RuntimeException('SplStack can only be used in LIFO mode.');
+    }
+    parent::setIteratorMode($mode);
+  }
+}
diff --git a/hphp/system/php/spl/file_handling/SplTempFileObject.php b/hphp/system/php/spl/file_handling/SplTempFileObject.php
new file mode 100644
index 000000000..bf045e221
--- /dev/null
+++ b/hphp/system/php/spl/file_handling/SplTempFileObject.php
@@ -0,0 +1,37 @@
+<?php
+
+// This doc comment block generated by idl/sysdoc.php
+/**
+ * ( excerpt from http://php.net/manual/en/class.spltempfileobject.php )
+ *
+ * The SplTempFileObject class offers an object oriented interface for a
+ * temporary file.
+ *
+ */
+class SplTempFileObject extends SplFileObject {
+
+  // This doc comment block generated by idl/sysdoc.php
+  /**
+   * ( excerpt from http://php.net/manual/en/spltempfileobject.construct.php
+   * )
+   *
+   * Construct a new temporary file object.
+   *
+   * @maxMemory  mixed   The maximum amount of memory (in bytes, default is 2
+   *                     MB) for the temporary file to use. If the temporary
+   *                     file exceeds this size, it will be moved to a file
+   *                     in the system's temp directory.
+   *
+   *                     If max_memory is negative, only memory will be
+   *                     used. If max_memory is zero, no memory will be used.
+   *
+   * @return     mixed   No value is returned.
+   */
+  public function __construct($maxMemory = null) {
+    if ($maxMemory === null) {
+      parent::__construct('php://temp', 'r+');
+    } else {
+      parent::__construct("php://temp/maxmemory:$maxMemory", 'r+');
+    }
+  }
+}
diff --git a/hphp/test/zend/bad/ext-spl/SplDoublyLinkedList_current.php b/hphp/test/zend/good/ext-spl/SplDoublyLinkedList_current.php
similarity index 100%
rename from hphp/test/zend/bad/ext-spl/SplDoublyLinkedList_current.php
rename to hphp/test/zend/good/ext-spl/SplDoublyLinkedList_current.php
diff --git a/hphp/test/zend/bad/ext-spl/SplDoublyLinkedList_current.php.expectf b/hphp/test/zend/good/ext-spl/SplDoublyLinkedList_current.php.expectf
similarity index 100%
rename from hphp/test/zend/bad/ext-spl/SplDoublyLinkedList_current.php.expectf
rename to hphp/test/zend/good/ext-spl/SplDoublyLinkedList_current.php.expectf
diff --git a/hphp/test/zend/bad/ext-spl/SplDoublyLinkedList_current_empty.php b/hphp/test/zend/good/ext-spl/SplDoublyLinkedList_current_empty.php
similarity index 100%
rename from hphp/test/zend/bad/ext-spl/SplDoublyLinkedList_current_empty.php
rename to hphp/test/zend/good/ext-spl/SplDoublyLinkedList_current_empty.php
diff --git a/hphp/test/zend/bad/ext-spl/SplDoublyLinkedList_current_empty.php.expectf b/hphp/test/zend/good/ext-spl/SplDoublyLinkedList_current_empty.php.expectf
similarity index 100%
rename from hphp/test/zend/bad/ext-spl/SplDoublyLinkedList_current_empty.php.expectf
rename to hphp/test/zend/good/ext-spl/SplDoublyLinkedList_current_empty.php.expectf
diff --git a/hphp/test/zend/bad/ext-spl/SplDoublyLinkedList_getIteratorMode.php b/hphp/test/zend/good/ext-spl/SplDoublyLinkedList_getIteratorMode.php
similarity index 100%
rename from hphp/test/zend/bad/ext-spl/SplDoublyLinkedList_getIteratorMode.php
rename to hphp/test/zend/good/ext-spl/SplDoublyLinkedList_getIteratorMode.php
diff --git a/hphp/test/zend/bad/ext-spl/SplDoublyLinkedList_getIteratorMode.php.expectf b/hphp/test/zend/good/ext-spl/SplDoublyLinkedList_getIteratorMode.php.expectf
similarity index 100%
rename from hphp/test/zend/bad/ext-spl/SplDoublyLinkedList_getIteratorMode.php.expectf
rename to hphp/test/zend/good/ext-spl/SplDoublyLinkedList_getIteratorMode.php.expectf
diff --git a/hphp/test/zend/bad/ext-spl/SplDoublyLinkedList_isEmpty_empty.php b/hphp/test/zend/good/ext-spl/SplDoublyLinkedList_isEmpty_empty.php
similarity index 100%
rename from hphp/test/zend/bad/ext-spl/SplDoublyLinkedList_isEmpty_empty.php
rename to hphp/test/zend/good/ext-spl/SplDoublyLinkedList_isEmpty_empty.php
diff --git a/hphp/test/zend/bad/ext-spl/SplDoublyLinkedList_isEmpty_empty.php.expectf b/hphp/test/zend/good/ext-spl/SplDoublyLinkedList_isEmpty_empty.php.expectf
similarity index 100%
rename from hphp/test/zend/bad/ext-spl/SplDoublyLinkedList_isEmpty_empty.php.expectf
rename to hphp/test/zend/good/ext-spl/SplDoublyLinkedList_isEmpty_empty.php.expectf
diff --git a/hphp/test/zend/bad/ext-spl/SplDoublyLinkedList_isEmpty_not-empty.php b/hphp/test/zend/good/ext-spl/SplDoublyLinkedList_isEmpty_not-empty.php
similarity index 100%
rename from hphp/test/zend/bad/ext-spl/SplDoublyLinkedList_isEmpty_not-empty.php
rename to hphp/test/zend/good/ext-spl/SplDoublyLinkedList_isEmpty_not-empty.php
diff --git a/hphp/test/zend/bad/ext-spl/SplDoublyLinkedList_isEmpty_not-empty.php.expectf b/hphp/test/zend/good/ext-spl/SplDoublyLinkedList_isEmpty_not-empty.php.expectf
similarity index 100%
rename from hphp/test/zend/bad/ext-spl/SplDoublyLinkedList_isEmpty_not-empty.php.expectf
rename to hphp/test/zend/good/ext-spl/SplDoublyLinkedList_isEmpty_not-empty.php.expectf
diff --git a/hphp/test/zend/bad/ext-spl/SplDoublyLinkedList_lifoMode.php b/hphp/test/zend/good/ext-spl/SplDoublyLinkedList_lifoMode.php
similarity index 100%
rename from hphp/test/zend/bad/ext-spl/SplDoublyLinkedList_lifoMode.php
rename to hphp/test/zend/good/ext-spl/SplDoublyLinkedList_lifoMode.php
diff --git a/hphp/test/zend/bad/ext-spl/SplDoublyLinkedList_lifoMode.php.expectf b/hphp/test/zend/good/ext-spl/SplDoublyLinkedList_lifoMode.php.expectf
similarity index 100%
rename from hphp/test/zend/bad/ext-spl/SplDoublyLinkedList_lifoMode.php.expectf
rename to hphp/test/zend/good/ext-spl/SplDoublyLinkedList_lifoMode.php.expectf
diff --git a/hphp/test/zend/bad/ext-spl/SplDoublyLinkedList_offsetExists_success.php b/hphp/test/zend/good/ext-spl/SplDoublyLinkedList_offsetExists_success.php
similarity index 100%
rename from hphp/test/zend/bad/ext-spl/SplDoublyLinkedList_offsetExists_success.php
rename to hphp/test/zend/good/ext-spl/SplDoublyLinkedList_offsetExists_success.php
diff --git a/hphp/test/zend/bad/ext-spl/SplDoublyLinkedList_offsetExists_success.php.expectf b/hphp/test/zend/good/ext-spl/SplDoublyLinkedList_offsetExists_success.php.expectf
similarity index 100%
rename from hphp/test/zend/bad/ext-spl/SplDoublyLinkedList_offsetExists_success.php.expectf
rename to hphp/test/zend/good/ext-spl/SplDoublyLinkedList_offsetExists_success.php.expectf
diff --git a/hphp/test/zend/bad/ext-spl/SplDoublyLinkedList_offsetGet_empty.php b/hphp/test/zend/good/ext-spl/SplDoublyLinkedList_offsetGet_empty.php
similarity index 100%
rename from hphp/test/zend/bad/ext-spl/SplDoublyLinkedList_offsetGet_empty.php
rename to hphp/test/zend/good/ext-spl/SplDoublyLinkedList_offsetGet_empty.php
diff --git a/hphp/test/zend/bad/ext-spl/SplDoublyLinkedList_offsetGet_empty.php.expectf b/hphp/test/zend/good/ext-spl/SplDoublyLinkedList_offsetGet_empty.php.expectf
similarity index 100%
rename from hphp/test/zend/bad/ext-spl/SplDoublyLinkedList_offsetGet_empty.php.expectf
rename to hphp/test/zend/good/ext-spl/SplDoublyLinkedList_offsetGet_empty.php.expectf
diff --git a/hphp/test/zend/bad/ext-spl/SplDoublyLinkedList_offsetSet_invalid_parameter.php b/hphp/test/zend/good/ext-spl/SplDoublyLinkedList_offsetSet_invalid_parameter.php
similarity index 100%
rename from hphp/test/zend/bad/ext-spl/SplDoublyLinkedList_offsetSet_invalid_parameter.php
rename to hphp/test/zend/good/ext-spl/SplDoublyLinkedList_offsetSet_invalid_parameter.php
diff --git a/hphp/test/zend/bad/ext-spl/SplDoublyLinkedList_offsetSet_invalid_parameter.php.expectf b/hphp/test/zend/good/ext-spl/SplDoublyLinkedList_offsetSet_invalid_parameter.php.expectf
similarity index 100%
rename from hphp/test/zend/bad/ext-spl/SplDoublyLinkedList_offsetSet_invalid_parameter.php.expectf
rename to hphp/test/zend/good/ext-spl/SplDoublyLinkedList_offsetSet_invalid_parameter.php.expectf
diff --git a/hphp/test/zend/bad/ext-spl/SplDoublyLinkedList_offsetSet_one_invalid_parameter.php b/hphp/test/zend/good/ext-spl/SplDoublyLinkedList_offsetSet_one_invalid_parameter.php
similarity index 100%
rename from hphp/test/zend/bad/ext-spl/SplDoublyLinkedList_offsetSet_one_invalid_parameter.php
rename to hphp/test/zend/good/ext-spl/SplDoublyLinkedList_offsetSet_one_invalid_parameter.php
diff --git a/hphp/test/zend/bad/ext-spl/SplDoublyLinkedList_offsetSet_one_invalid_parameter.php.expectf b/hphp/test/zend/good/ext-spl/SplDoublyLinkedList_offsetSet_one_invalid_parameter.php.expectf
similarity index 100%
rename from hphp/test/zend/bad/ext-spl/SplDoublyLinkedList_offsetSet_one_invalid_parameter.php.expectf
rename to hphp/test/zend/good/ext-spl/SplDoublyLinkedList_offsetSet_one_invalid_parameter.php.expectf
diff --git a/hphp/test/zend/bad/ext-spl/SplDoublyLinkedList_offsetUnset_greater_than_elements.php b/hphp/test/zend/good/ext-spl/SplDoublyLinkedList_offsetUnset_greater_than_elements.php
similarity index 100%
rename from hphp/test/zend/bad/ext-spl/SplDoublyLinkedList_offsetUnset_greater_than_elements.php
rename to hphp/test/zend/good/ext-spl/SplDoublyLinkedList_offsetUnset_greater_than_elements.php
diff --git a/hphp/test/zend/bad/ext-spl/SplDoublyLinkedList_offsetUnset_greater_than_elements.php.expectf b/hphp/test/zend/good/ext-spl/SplDoublyLinkedList_offsetUnset_greater_than_elements.php.expectf
similarity index 100%
rename from hphp/test/zend/bad/ext-spl/SplDoublyLinkedList_offsetUnset_greater_than_elements.php.expectf
rename to hphp/test/zend/good/ext-spl/SplDoublyLinkedList_offsetUnset_greater_than_elements.php.expectf
diff --git a/hphp/test/zend/bad/ext-spl/SplDoublyLinkedList_offsetUnset_parameter-larger-num-elements.php b/hphp/test/zend/good/ext-spl/SplDoublyLinkedList_offsetUnset_parameter-larger-num-elements.php
similarity index 100%
rename from hphp/test/zend/bad/ext-spl/SplDoublyLinkedList_offsetUnset_parameter-larger-num-elements.php
rename to hphp/test/zend/good/ext-spl/SplDoublyLinkedList_offsetUnset_parameter-larger-num-elements.php
diff --git a/hphp/test/zend/bad/ext-spl/SplDoublyLinkedList_offsetUnset_parameter-larger-num-elements.php.expectf b/hphp/test/zend/good/ext-spl/SplDoublyLinkedList_offsetUnset_parameter-larger-num-elements.php.expectf
similarity index 100%
rename from hphp/test/zend/bad/ext-spl/SplDoublyLinkedList_offsetUnset_parameter-larger-num-elements.php.expectf
rename to hphp/test/zend/good/ext-spl/SplDoublyLinkedList_offsetUnset_parameter-larger-num-elements.php.expectf
diff --git a/hphp/test/zend/bad/ext-spl/SplDoublyLinkedList_push_missing_parameter.php b/hphp/test/zend/good/ext-spl/SplDoublyLinkedList_push_missing_parameter.php
similarity index 100%
rename from hphp/test/zend/bad/ext-spl/SplDoublyLinkedList_push_missing_parameter.php
rename to hphp/test/zend/good/ext-spl/SplDoublyLinkedList_push_missing_parameter.php
diff --git a/hphp/test/zend/bad/ext-spl/SplDoublyLinkedList_push_missing_parameter.php.expectf b/hphp/test/zend/good/ext-spl/SplDoublyLinkedList_push_missing_parameter.php.expectf
similarity index 100%
rename from hphp/test/zend/bad/ext-spl/SplDoublyLinkedList_push_missing_parameter.php.expectf
rename to hphp/test/zend/good/ext-spl/SplDoublyLinkedList_push_missing_parameter.php.expectf
diff --git a/hphp/test/zend/bad/ext-spl/SplDoublyLinkedList_unshift_missing_parameter.php b/hphp/test/zend/good/ext-spl/SplDoublyLinkedList_unshift_missing_parameter.php
similarity index 100%
rename from hphp/test/zend/bad/ext-spl/SplDoublyLinkedList_unshift_missing_parameter.php
rename to hphp/test/zend/good/ext-spl/SplDoublyLinkedList_unshift_missing_parameter.php
diff --git a/hphp/test/zend/bad/ext-spl/SplDoublyLinkedList_unshift_missing_parameter.php.expectf b/hphp/test/zend/good/ext-spl/SplDoublyLinkedList_unshift_missing_parameter.php.expectf
similarity index 100%
rename from hphp/test/zend/bad/ext-spl/SplDoublyLinkedList_unshift_missing_parameter.php.expectf
rename to hphp/test/zend/good/ext-spl/SplDoublyLinkedList_unshift_missing_parameter.php.expectf
diff --git a/hphp/test/zend/bad/ext-spl/SplDoublylinkedlist_offsetunset_first002.php b/hphp/test/zend/good/ext-spl/SplDoublylinkedlist_offsetunset_first002.php
similarity index 100%
rename from hphp/test/zend/bad/ext-spl/SplDoublylinkedlist_offsetunset_first002.php
rename to hphp/test/zend/good/ext-spl/SplDoublylinkedlist_offsetunset_first002.php
diff --git a/hphp/test/zend/bad/ext-spl/SplDoublylinkedlist_offsetunset_first002.php.expectf b/hphp/test/zend/good/ext-spl/SplDoublylinkedlist_offsetunset_first002.php.expectf
similarity index 100%
rename from hphp/test/zend/bad/ext-spl/SplDoublylinkedlist_offsetunset_first002.php.expectf
rename to hphp/test/zend/good/ext-spl/SplDoublylinkedlist_offsetunset_first002.php.expectf
diff --git a/hphp/test/zend/bad/ext-spl/SplFixedArray__construct_param_float.php b/hphp/test/zend/good/ext-spl/SplFixedArray__construct_param_float.php
similarity index 100%
rename from hphp/test/zend/bad/ext-spl/SplFixedArray__construct_param_float.php
rename to hphp/test/zend/good/ext-spl/SplFixedArray__construct_param_float.php
diff --git a/hphp/test/zend/bad/ext-spl/SplFixedArray__construct_param_float.php.expectf b/hphp/test/zend/good/ext-spl/SplFixedArray__construct_param_float.php.expectf
similarity index 100%
rename from hphp/test/zend/bad/ext-spl/SplFixedArray__construct_param_float.php.expectf
rename to hphp/test/zend/good/ext-spl/SplFixedArray__construct_param_float.php.expectf
diff --git a/hphp/test/zend/bad/ext-spl/SplFixedArray_fromArray_invalid_parameter_001.php b/hphp/test/zend/good/ext-spl/SplFixedArray_fromArray_invalid_parameter_001.php
similarity index 100%
rename from hphp/test/zend/bad/ext-spl/SplFixedArray_fromArray_invalid_parameter_001.php
rename to hphp/test/zend/good/ext-spl/SplFixedArray_fromArray_invalid_parameter_001.php
diff --git a/hphp/test/zend/bad/ext-spl/SplFixedArray_fromArray_invalid_parameter_001.php.expectf b/hphp/test/zend/good/ext-spl/SplFixedArray_fromArray_invalid_parameter_001.php.expectf
similarity index 100%
rename from hphp/test/zend/bad/ext-spl/SplFixedArray_fromArray_invalid_parameter_001.php.expectf
rename to hphp/test/zend/good/ext-spl/SplFixedArray_fromArray_invalid_parameter_001.php.expectf
diff --git a/hphp/test/zend/bad/ext-spl/SplFixedArray_fromArray_invalid_parameter_002.php b/hphp/test/zend/good/ext-spl/SplFixedArray_fromArray_invalid_parameter_002.php
similarity index 100%
rename from hphp/test/zend/bad/ext-spl/SplFixedArray_fromArray_invalid_parameter_002.php
rename to hphp/test/zend/good/ext-spl/SplFixedArray_fromArray_invalid_parameter_002.php
diff --git a/hphp/test/zend/bad/ext-spl/SplFixedArray_fromArray_invalid_parameter_002.php.expectf b/hphp/test/zend/good/ext-spl/SplFixedArray_fromArray_invalid_parameter_002.php.expectf
similarity index 100%
rename from hphp/test/zend/bad/ext-spl/SplFixedArray_fromArray_invalid_parameter_002.php.expectf
rename to hphp/test/zend/good/ext-spl/SplFixedArray_fromArray_invalid_parameter_002.php.expectf
diff --git a/hphp/test/zend/bad/ext-spl/SplFixedArray_fromarray_param_boolean.php b/hphp/test/zend/good/ext-spl/SplFixedArray_fromarray_param_boolean.php
similarity index 100%
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