Add a __wakeup() method to SplFixedArray, thereby fixing serialising an

SplFixedArray object and bug #60560 (SplFixedArray un-/serialize, getSize(),
count() return 0, keys are strings).

UPGRADING

@@ -450,6 +450,9 @@ UPGRADE NOTES - PHP X.Y
        - SplFileObject
          - SplFileObject::fputcsv()
 
+       - SplFixedArray
+         - SplFixedArray::__wakeup()
+
      i. New class constants
 
        - 

ext/spl/spl_fixedarray.c

@@ -579,6 +579,38 @@ SPL_METHOD(SplFixedArray, __construct)
 }
 /* }}} */
 
+/* {{{ proto void SplFixedArray::__wakeup()
+*/
+SPL_METHOD(SplFixedArray, __wakeup)
+{
+	spl_fixedarray_object *intern = (spl_fixedarray_object *) zend_object_store_get_object(getThis() TSRMLS_CC);
+	HashPosition ptr;
+	HashTable *intern_ht = zend_std_get_properties(getThis() TSRMLS_CC);
+	zval **data;
+
+	if (FAILURE == zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "")) {
+		return;
+	}
+
+	if (!intern->array) {
+		int index = 0;
+		int size = zend_hash_num_elements(intern_ht);
+
+		intern->array = emalloc(sizeof(spl_fixedarray));
+		spl_fixedarray_init(intern->array, size TSRMLS_CC);
+
+		for (zend_hash_internal_pointer_reset_ex(intern_ht, &ptr); zend_hash_get_current_data_ex(intern_ht, (void **) &data, &ptr) == SUCCESS; zend_hash_move_forward_ex(intern_ht, &ptr)) {
+			Z_ADDREF_PP(data);
+			intern->array->elements[index++] = *data;
+		}
+
+		/* Remove the unserialised properties, since we now have the elements
+		 * within the spl_fixedarray_object structure. */
+		zend_hash_clean(intern_ht);
+	}
+}
+/* }}} */
+
 /* {{{ proto int SplFixedArray::count(void)
 */
 SPL_METHOD(SplFixedArray, count)
@@ -1056,6 +1088,7 @@ ZEND_END_ARG_INFO()
 
 static zend_function_entry spl_funcs_SplFixedArray[] = { /* {{{ */
 	SPL_ME(SplFixedArray, __construct,     arginfo_splfixedarray_construct,ZEND_ACC_PUBLIC)
+	SPL_ME(SplFixedArray, __wakeup,        arginfo_splfixedarray_void,     ZEND_ACC_PUBLIC)
 	SPL_ME(SplFixedArray, count,           arginfo_splfixedarray_void,     ZEND_ACC_PUBLIC)
 	SPL_ME(SplFixedArray, toArray,         arginfo_splfixedarray_void,     ZEND_ACC_PUBLIC)
 	SPL_ME(SplFixedArray, fromArray,       arginfo_fixedarray_fromArray,   ZEND_ACC_PUBLIC|ZEND_ACC_STATIC)

ext/spl/tests/SplFixedArray_serialize.phpt

@@ -0,0 +1,52 @@
+--TEST--
+SplFixedArray serialisation
+--FILE--
+<?php
+
+$array = new SplFixedArray(5);
+
+$obj = new stdClass;
+$obj->prop = 'value';
+
+$array[0] = 'foo';
+$array[2] = 42;
+$array[3] = $obj;
+$array[4] = range(1, 5);
+
+$ser = serialize($array);
+echo "$ser\n";
+$unser = unserialize($ser);
+
+printf("count: %d\n", count($unser));
+printf("getSize(): %d\n", $unser->getSize());
+
+var_dump($unser[0], $unser[1], $unser[2], $unser[3], $unser[4]);
+
+$unser[4] = 'quux';
+var_dump($unser[4]);
+
+?>
+--EXPECT--
+O:13:"SplFixedArray":5:{i:0;s:3:"foo";i:1;N;i:2;i:42;i:3;O:8:"stdClass":1:{s:4:"prop";s:5:"value";}i:4;a:5:{i:0;i:1;i:1;i:2;i:2;i:3;i:3;i:4;i:4;i:5;}}
+count: 5
+getSize(): 5
+string(3) "foo"
+NULL
+int(42)
+object(stdClass)#4 (1) {
+  ["prop"]=>
+  string(5) "value"
+}
+array(5) {
+  [0]=>
+  int(1)
+  [1]=>
+  int(2)
+  [2]=>
+  int(3)
+  [3]=>
+  int(4)
+  [4]=>
+  int(5)
+}
+string(4) "quux"