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PHP 7.4 INTERNALS UPGRADE NOTES
1. Internal API changes
a. php_sys_symlink() and php_sys_link()
b. zend_lookup_class_ex() and zend_fetch_class_by_name()
c. Function/property/class flags
d. Removed zend_check_private()
2. Build system changes
a. Unix build system changes
b. Windows build system changes
3. Module changes
a. ext/xml
========================
1. Internal API changes
========================
a. php_sys_symlink() and php_sys_link() portability macros have been
added, which behave like POSIX's symlink() and link(), respectively, on
POSIX compliant systems and on Windows.
b. zend_lookup_class_ex() and zend_fetch_class_by_name() prototypes were
changed to accept optional lower-case class name as zend_string*,
instead of zval*.
c. Function/property/class flags changes
- ZEND_ACC_CTOR and ZEND_ACC_DTOR are removed. It's possible to check if
method is a constructor/destructor using the following condition
(func->commpon.scope->constructor == func).
- ZEND_ACC_IMPLEMENTED_ABSTRACT is removed (it was used only internally
during inheritance).
- ZEND_ACC_IMPLICIT_PUBLIC is removed (it was used only for reflection)
- ZEND_ACC_SHADOW property flag is removed. Instead of creating shadow
clone, now we use the same private property_info, and should also
check property_info->ce (in the same way as with methods).
- ZEND_ACC_ANON_BOUND is replaced with ZEND_ACC_LINKED. This flag is set
not only during anonymous classes declaration, but also during any
run-time or compile-time class declaration.
- ZEND_ACC_... flags are re-numbered.
d. zend_check_private() is removed. Use (func->common.scope == scope) instead.
========================
2. Build system changes
========================
a. Unix build system changes
- configure --help now also outputs --program-suffix and --program-prefix
information by using the Autoconf AC_ARG_PROGRAM macro.
- Obsolescent macros AC_FUNC_VPRINTF and AC_FUNC_UTIME_NULL have been
removed. Symbols HAVE_VPRINTF and HAVE_UTIME_NULL are no longer defined
since they are not needed on the current systems.
b. Windows build system changes
========================
3. Module changes
========================
a. ext/xml
- The public (internal) API of the ext/xml extension has been removed. All
functions and structures are private to the extension now.
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