rfc:object_keys_in_arrays

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rfc:object_keys_in_arrays [2021/01/08 11:23] – nikicrfc:object_keys_in_arrays [2021/01/08 15:07] – nikic
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   * ''extract()'': Ignore object keys. Alternatively we could try to convert them to strings, which would most likely throw.   * ''extract()'': Ignore object keys. Alternatively we could try to convert them to strings, which would most likely throw.
 +  * ''var_dump()'' etc: How should object keys get represented?
 +  * ''serialize()'': The serialization format can easily deal with object keys. However, keys are currently not counted for back references. To preserve proper identity for object keys, while retaining backwards compatibility with the existing format, we need to count object keys only for back references.
  
 ===== Backward Incompatible Changes ===== ===== Backward Incompatible Changes =====
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 The new macros can be polyfilled for older PHP versions, which is also why this introduces new macros rather than modifying existing ones. The new macros can be polyfilled for older PHP versions, which is also why this introduces new macros rather than modifying existing ones.
 +
 +The ''zend_hash_get_current_key(_ex)'' function is removed. Instead, one of the following two functions can be used (where the former already exists on older PHP versions, while the latter is more efficient):
 +
 +<code c>
 +/* This function populates `key` with a copy of the key, or a null zval if exhausted. */
 +ZEND_API void  ZEND_FASTCALL zend_hash_get_current_key_zval_ex(const HashTable *ht, zval *key, HashPosition *pos);
 +
 +/* This function returns the key zval directly, or NULL if exhausted. */
 +ZEND_API zval* ZEND_FASTCALL zend_hash_get_current_zkey(const HashTable *ht, HashPosition *pos); 
 +</code>
 +
 +The ''zend_hash_get_current_key_type(_ex)'' function and the ''HASH_KEY_IS_LONG'', ''HASH_KEY_IS_STRING'' and ''HASH_KEY_NON_EXISTENT'' constants are also removed, and should be replaced by taking the type of the key zval.
  
 ===== Vote ===== ===== Vote =====
rfc/object_keys_in_arrays.txt · Last modified: 2021/01/11 14:22 by nikic

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