Trying to avoid use of $Globals

[alanh]

Im trying to avoid the use of globals in my code for obvious reasons. I have ran into a problem however. Im trying to pass a variable that has been registered by the session to another function.

Ex:

function set_value_of_foo() {
$bar = "whatever";
session_register("bar");
return $bar; //do I need to do that?
}

set_value_of_foo();

function print_foo($bar) { //here is where I run into trouble
print($bar);
}

print_foo($bar);

In the example I receive an error that bar is not defined.

Any help would be greatly appreciated.

[eoghain]

Ok, a little lesson on scope. What happens inside of a function stays inside of a function. Since you created the variable $bar inside the function the only place where $bar is valid is inside that funciton.

Now to fix your problem you can do either of these things:

function set_value_of_foo() { 
$bar = "whatever"; 
session_register("bar"); 
return $bar; //do I need to do that?   Yes leave this for this example
} 

$bar = set_value_of_foo(); 

function print_foo($bar) { //here is where I run into trouble 
print($bar); 
} 

print_foo($bar); 

Or

function set_value_of_foo() { 
$bar = "whatever"; 
session_register("bar"); 
// return $bar; //do I need to do that?  No you don't need it for this example.
} 

set_value_of_foo(); 

function print_foo($bar) { //here is where I run into trouble 
print($bar); 
} 

print_foo($_SESSION['bar']);