Edit report at https://bugs.php.net/bug.php?id=67785&edit=1
ID: 67785
Updated by: [email protected]
Reported by: [email protected]
Summary: Derived classes
-Status: Open
+Status: Closed
Type: Bug
Package: PHP Language Specification
PHP Version: Irrelevant
-Assigned To:
+Assigned To: stas
Block user comment: N
Private report: N
New Comment:
The fix for this bug has been committed.
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Thank you for the report, and for helping us make PHP better.
I think the "Inheritance" section now covers this.
Previous Comments:
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[2014-08-05 17:16:34] [email protected]
Description:
------------
https://github.com/php/php-langspec/blob/master/spec/14-classes.md#classes
Derived classes get mentioned a fair amount throughout section 14 but there is no one place that really pins down a lot of the rules about how derived classes work. Here are some questions I don't think the spec really answers that it should answer:
- What happens when a base class and a derived class both define a public instance property named $x? Specifically how does storage work in such cases?
(It appears that only one $x is allocated, and it has the initial value of the most-derived declaration.)
- What happens when a base class defines a private instance property named $x and then a derived class declares a public or protected or private instance property named $x? Specifically how does storage work in such cases? (It appears that two $x’s are allocated.)
- What happens when a base class defined a static property named $x and then a derived class declares a static property named $x? How does storage work in such cases?
- If the method body for C::foo defines a function static variable, and then D derives from C and D does not override method foo, how does storage for the function static work?
- What if there is a private instance method named "bar" and a non-private instance method named "bar" within the same inheritance hierarchy, and then a call site somewhere in the class hierarchy calls instance method "bar". Which "bar" gets called?
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Edit this bug report at https://bugs.php.net/bug.php?id=67785&edit=1
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