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PHP 8.0 INTERNALS UPGRADE NOTES
1. Internal API changes
a. Object Handlers API
b. ZEND_OVERLOADED_FUNCTION and corresponding call_method() object handler
2. Build system changes
a. Abstract
b. Unix build system changes
c. Windows build system changes
3. Module changes
========================
1. Internal API changes
========================
a. Object Handlers API and some related functions, e.g. zend_call_method() and
zend_objects_clone_obj() were changed to receive zend_object* instead of
zval* and zend_string* instead of zval* for property names.
b. ZEND_OVERLOADED_FUNCTION and corresponding call_method() object handler
were removed. ZEND_INTERNAL_FUNCTION with ZEND_ACC_CALL_VIA_HANDLER and
defined "handler" callback should be used instead. This "handler" callback
should also take care about function cleanup. See ext/zend_test/test.c
for example.
========================
2. Build system changes
========================
a. Abstract
b. Unix build system changes
c. Windows build system changes
========================
3. Module changes
========================
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