Norbert Wenzel wrote:
Hi, i have a very strange example of code. Maybe you know where my
mistake could be.
I've got an index.php with a few div's and a short php code, like:
<div>echo $_SESSION['view']->getContent();</div>
The view is in every case one of my view objects. And there's the problem.
In my specific case $_SESSION['view'] is of class "NoLoggedUserView",
which of course extends "View". The "View" class containts a few public
methods, namely
getTitle()
getHeadline()
getSelection()
getSubselection()
getContentHeadline()
getContent()
getFunctions()
The child class "NoLoggedUserView" contains only the
getContent()-method, which provides a login window.
But of course I still call all the other methods like getTitle() in my
index.php.
Until yesterday I encountered no problems with that, but today, if i
call $noLoggedUserView->getTitle() in the index.php i get an empty
document. No error, no warning, no notice ... nothing. The page stays
the same and doesn't change. Even the timestamp I print out to check if
there has been a change, doesn't change.
I tested a few things:
The page loads fine and without any problems, if the public method
getTitle() is written in the NoLoggedUserView and the method returns a
stupid string. If getTitle() in NoLoggedUserView looks like this
did you try letting the parent class method just return a string constant?
public function getTitle() {
return parent::getTitle();
}
there is the same problem as before. I get an empty page, no changes are
made.
My current version of getTitle() looks like this:
current version in NoLoggedUserView I presume, whats the definition
in the parent class?
public function getTitle() {
//return 'NoLoggedTitle'; // works great
//return parent::getTitle(); // no changes are made
what if there is no parent?
$classname = get_parent_class($this);
$v = new $classname();
now just imagine if: $classname === false
return $v->getTitle(); // works great
}
And again, this strange thing works.
So what could cause php to act like this? Any ideas or suggestions or at
least assumptions?
Please, I really don't know where to search the mistake..
use a shed load of echo(), print_r() and/or var_dump() to see what stufff is
and how far along the execution gets - I do it now and again when I have
bumped into another segfault.
i.e. do stuff like
echo 1,"<br>";
// your code here
echo 2,"<br>";
// your code here
echo 3,"<br>";
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