#28335 [Opn->Fbk]: wddx_serialize_value returns empty string

ID: 28335 Updated by: sniper@php.net Reported By: antonr at game dot permonline dot ru -Status: Open +Status: Feedback Bug Type: WDDX related Operating System: Win32 PHP Version: 5CVS-2004-05-09 (dev) New Comment: Please try using this CVS snapshot: http://snaps.php.net/php5-latest.tar.gz For Windows: http://snaps.php.net/win32/php5-win32-latest.zip Previous Comments: ------------------------------------------------------------------------ [2004-06-30 15:45:01] antonr at game dot permonline dot ru Probably you should part the objects themselves and links to these objects. And then serialize them separately. ------------------------------------------------------------------------ [2004-06-30 12:56:54] moriyoshi@php.net A quotation from "The WDDX DTD" bundled in the WDDX SDK 10a. --------------------------------------------- Serialization model- WDDX serializes data using a model of pure aggregation. It has no mechanism for handling object references. Aliased references will result in multiple object instances being deserialized. WDDX serialization applied to a data structure that has cyclical references will most likely result in infinite iteration/recursion, depending on the serializer implementation. Object references support is another area of future investigation. --------------------------------------------- Since WDDX instances are not designed to hold references as stated in the documentation, circular references doesn't make sense with it. It works differently from the serialize() function in essence. But, segfault should be prevented in a manner that wouldn't serialize objects referenced that way. Patch can be found here: http://www.voltex.jp/patches/bug28335-preliminary.patch.diff ------------------------------------------------------------------------ [2004-06-21 12:46:20] clemens at gutweiler dot net This example segfaults with PHP-5-RC3. It contains recursive objects and should be solved like the 'r:123'-way in serialize(). ------------------------------------------------------------------------ [2004-05-09 09:16:16] antonr at game dot permonline dot ru Description: ------------ In some cases wddx_serialize_value returns empty string. Reproduce code: --------------- <?php class MyClass1 { public $myclass2; } class MyClass2 { public $myclass1; } $a = new MyClass1; $a->number = 1; $a->myclass2 = new MyClass2; $a->myclass2->myclass1 = $a; echo wddx_serialize_value($a); ?> Actual result: -------------- empty string ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=28335&edit=1