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Posted by kvnsmnsn on 08/07/07 20:46
I've got a section of code as follows that checks to see if variable
<$User> is registered. If it isn't, then it registers it and calls
its constructor to actually create it. If it is, then it checks to
see if it's an object, and if it's not an object it prints an error
message and aborts the program.
I've been able to document that the first time through the program it
takes the first branch, and therefore registers the variable and cre-
ates an object that it assigns to <$User>. The second time through
the program it detects that <User> is registered, but when I call
<is_object( $User)> I get <false>, and in fact on inspection it turns
out that the second time through this code <$User> turns out to be
<null>.
My boss tells me that this code is working on one of our machines, but
on my machine I keep getting this error message. Can anybody tell me
why PHP is recognizing that this variable is registered but that it's
forgetting that it's an object and considers it to have a <null> va-
lue? Is it possible for a variable to be initialized with a construc-
tor one time through a PHP file, be registered, and then for it to be
<null> the second time through the PHP file? I've gone all the way
through all the PHP code we have and haven't found a single place that
sets <$User> to <null>.
---Kevin Simonson
"You'll never get to heaven, or even to LA,
if you don't believe there's a way."
from _Why Not_
####################################################################
// Register session variable "User" as an object
if( !session_is_registered( "User" ) ) {
session_register( "User" );
$User = new User();
} else if( !is_object( $User ) ) {
system_error( "Unable to instantiate User object." );
} // end if
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