php-src/UPGRADING.INTERNALS at master · apogadaev/php-src · GitHub

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PHP 8.3 INTERNALS UPGRADE NOTES

1. Internal API changes

2. Build system changes

3. Module changes

4. OpCode changes

5. SAPI changes

========================
1. Internal API changes
========================

* zend_class_entry now possesses a default_object_handlers field, which
  provides a default object handler when create_object() is not overriding it.
* Custom Fiber implementations have to initialize EG(stack_limit) and
  EG(stack_base).
* EG(opline_before_exception) may now be null if the VM throws an exception
  before executing any opline.
* Many C header files have been cleaned up and include dependencies
  have been reduced.  Many headers which used to be always included by
  Zend headers (e.g. "errno.h") are no longer implied, and this may
  break the build of third-party extensions which relied on this
  implementation detail.  Those extensions may need to add the missing
  #include lines.
* Since version 8, PHP requires a C99 compiler.  Configure-time checks
  for C99 features have been removed and therefore macro definitions
  from php_config.h have disappeared.  Do not use those feature
  macros.

========================
2. Build system changes
========================

========================
3. Module changes
========================

 a. ext/json
   - A new function php_json_validate_ex has been added to check if the
     provided C string is valid for the given depth and options.

 b. ext/standard
   - The PHPAPI php_url_encode_hash_ex() function has had its signature change
     from:
     PHPAPI void php_url_encode_hash_ex(HashTable *ht, smart_str *formstr,
     				const char *num_prefix, size_t num_prefix_len,
     				const char *key_prefix, size_t key_prefix_len,
     				const char *key_suffix, size_t key_suffix_len,
     				zval *type, const char *arg_sep, int enc_type);
     to:
     PHPAPI void php_url_encode_hash_ex(HashTable *ht, smart_str *formstr,
     				const char *num_prefix, size_t num_prefix_len,
     				const zend_string *key_prefix,
     				zval *type, const zend_string *arg_sep, int enc_type);
     The change to use zend_string prevent the computation of the arg_sep
     length at each call. The key_suffix parameter was dropped as it was a
     constant value and depended on the key_prefix parameter to not be NULL.

========================
4. OpCode changes
========================

========================
5. SAPI changes
========================

* SAPIs that may execute in alternative stacks have to set EG(stack_limit) and
  EG(stack_base)