#40477 [Bgs]: object's read property handler not used in zend_print_zval_r_ex

ID: 40477 User updated by: piotrek dot pokora at gmail dot com Reported By: piotrek dot pokora at gmail dot com Status: Bogus Bug Type: Variables related Operating System: debian/linux PHP Version: 5.2.1 New Comment: >Of course get_properties() is required, how else do you >think it should work? As it works without get_properties. It's enough to add own read and write property hook and some function which "registers" properties of an object in constructor. It works _perfect_ for reading property, assigning value to it. And the same for derived classes. Look at mysqli implementation. It DOES NOT contain get_properties hook and works. Why? >You need to know the name of the property to be able to call >read_property(). Hook function requires zval *member as second argument. I do not know internals , please tell me :) read_property hook works _perfect_ without get_properties hook. >The fact that you can't find any docs for >get_properties()(which is >implemented quite a number of times in PHP sources) is >hardly a PHP bug. Yes, but the logic bug here is the fact that always internal zend functions "operate" in object's handlers with this little exception of print_t or var_dump when custom hash table is taken into account. So , to sum up. I can not find any not working part of code with only read and write property hook , except this one for print_r and var_dump. >Please discuss custom extension writing in >pecl-dev@lists.php.net mailing list. Will try :) Previous Comments: ------------------------------------------------------------------------ [2007-02-14 11:03:32] tony2001@php.net Of course get_properties() is required, how else do you think it should work? You need to know the name of the property to be able to call read_property(). The fact that you can't find any docs for get_properties()(which is implemented quite a number of times in PHP sources) is hardly a PHP bug. Please discuss custom extension writing in pecl-dev@lists.php.net mailing list. ------------------------------------------------------------------------ [2007-02-14 09:56:01] piotrek dot pokora at gmail dot com Description: ------------ zend_print_zval_r_ex uses object's get_properties handler and prints properties HashTable without using read_property handler. For custom object handlers hooks it means that get_properties should be also implemented as hook which leads to too much overloaded implementation as get_properties seems to be invoked for read and write hooks. Taking performance into account , one would sacrifice performance problem for print_r ( which is not used in real production environment ) which could use object's read_property handler hook. Reproduce code: --------------- Implement read and write property hooks for object. Assuming that property's data is set in C extension one is able to call: echo $object->prop; which prints property's value, while print_r($object); prints object's properties without values. I know I can implement own get_properties hook , but unfortunatelly I can not find suitable docs for such implementation. I think one should be able to reproduce it with mysqli extension which implement only get and read property hooks. ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=40477&edit=1