ID: 29104
Comment by: ulderico at maber dot com dot br
Reported By: tomas_matousek at hotmail dot com
Status: Open
Bug Type: Zend Engine 2 problem
Operating System: *
PHP Version: 5.0.0
Assigned To: Andi
New Comment:
IMHO, Nested Functions are BAD&WRONG, thus they should be disabled.
Firstly, when you DECLARE a function inside a function, you have a
redeclaration problem. Try to execute the parent function twice and
most likely you'll receive a message: "Fatal error: Cannot redeclare
XXXX".
OK! Some may dispute: "let's create an undeclare_function() so as to
allow at the end of the function undeclare the child function. It would
enable to reinvoke the parent function whenever we like". Well, THIS IS
ALSO B&R. Why would you undeclare a function that you're going to use?
Secondly, if a function needs to work in a closed (encapsuled)
environment, well, I think you need a CLASS, not a function. In a class
you may have a public, private or protected variables invoked by either
public, private or protected methods.
Thusly, a code like this (sorry the indentation, I want to save
space):
class A
{
function b(){}
function c(){}
function d(){}
function g(){
echo "function g - begin\n";
function f(){echo "function f\n";}
echo "function g - end\n";
}
}
should be written like this:
class A
{
function b(){}
function c(){}
function d(){}
function g(){
echo "function g - begin\n";
f::f();
echo "function g - end\n";
}
}
class f{
function f(){echo "function f\n";}
}
$obj = new A();
$obj->g();
So, the rationale is, why you need to have function within function if
you've got classes?
Previous Comments:
------------------------------------------------------------------------
[2004-08-14 01:24:12] [EMAIL PROTECTED]
While nested functions are maybe useful feature for someone declaration
of a function inside the body of a method (which happens to be a
function inside a class) is _ambigious_ . Why? There is no reserved
word "method" for marking methods of a class and "function" is used so
when it is between {} after class name "function" creates a method of
the class. IMO "function" inside a method should not be possible.
------------------------------------------------------------------------
[2004-07-16 18:00:35] postings-php-bug at hans-spath dot de
Wait a minute, PHP doesn't support nested functions?
Holy shit, documentation lies!
http://www.php.net/manual/en/language.functions.php
"Example 12-3. Functions within functions"
Do we need to file a documentation bug, too?
------------------------------------------------------------------------
[2004-07-13 21:46:59] [EMAIL PROTECTED]
PHP does not support nested functions. Still we need to disable this.
------------------------------------------------------------------------
[2004-07-13 21:42:52] tomas_matousek at hotmail dot com
PHP supports declaring functions "inline", i.e. almost anywhere in a
code. Such function is declared as global wherever it is declared.
Hence, I don't see any ambiguity if a function is declared inside a
method. PHP doesn't support adding new methods into existing class.
That's why a function declared in method can only be a global one.
------------------------------------------------------------------------
[2004-07-13 17:45:57] Jason at hybd dot net
>From what I gather, like most languages, PHP doesn't
support 'nested' methods. (And therefore I doubt this is
a bug)
Where you are calling f() is ambigous. As far as PHP is
concerned f() is probably a global function and not a
method embedded inside a::g().
------------------------------------------------------------------------
The remainder of the comments for this report are too long. To view
the rest of the comments, please view the bug report online at
http://bugs.php.net/29104
--
Edit this bug report at http://bugs.php.net/?id=29104&edit=1
