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[2007-02-14 09:56 UTC] 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. PatchesPull RequestsHistoryAllCommentsChangesGit/SVN commits
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>>Look at mysqli implementation. >>It DOES NOT contain get_properties hook and works. Why? >var_dump($mysqli_object); >Do you see anything? No. >That's why. Is it difficult to add posibility to read object's property from its own read_property hook? This bug is just about this. The point here is: even I add own get_properties function I can not update them in object's hash properties scope. At least it is not done via standard write_property handler. So I need to use own or standard hooks + additional object's properties hash table update which duplicates operation. Of course , get_properties hook can be missed in favour of own properties registration. But coming back to mysqli example: part of object constructor: zend_object_std_init(&intern->zo, class_type TSRMLS_CC); zend_hash_copy(intern->zo.properties, &class_type->default_properties, (copy_ctor_func_t) zval_add_ref, (void *) &tmp, sizeof(zval *)); The same hash is used by print_r, and doesn't have to be used in read or write property hook to make those hooks work. And coming back to this bug summary: All I report here is the issue of print_r and var_dump which uses zval.value.obj.properties hash table which doesn't have to be used in read or write property hooks. My hook doesn't require hash table value updates, all I need is object's property name ( hash key in this case ). print_r and var_dump uses hash table ( only ) so I need to update keys' values to make these function work. Why I defined my own hooks? Because print_r or var_dump or any other OOP featire in ZEND&PHP should respect my hooks. Right? If ZEND requires object's properties hash table value updates then I do not need read property hook as I can get property value from hash table. If ZEND requires updated hash table ( with keys and values ) in function like print_r , how can I avoid setting the same value twice? Once in write hook and once as hash value? I can add own get_properties hook. But print_r and var_dump will print values of properties only ( and only ) when I update hash table which is not mandatory in read or write property hook.>Please use pecl-dev. Please, make this bug open for the sake of logic and consistency. I know how to write own get_properties hook. I know how to workaround this problem ( yes it's workaround now, ugly though ). I know what any php extension developer is able to tell me. It doesn't change the fact that print_r or var_dump doesn't respect object's read_property hook. It must be clear and clean that (pseudocode): if(zval.type == IS_OBJECT) zval.value.obj.handlers.read_property Will pecl-dev advice will fix this issue? No. Is there another zend bug tracker and pecl-dev will help me find it? Or should I prepare patch and send somewhere?