Creating variables in thescope of caller function.

Anon

I created a function that is intended to set some variables in the scope of the calling
process. For example:

function my_func($label)
{
...
$GLOBALS[$label] = 10;
}

my_func("var1");
print ($var1); // Work ok!

The problem I have is that if I invoke the function from within another
function, the variable is not available in its scope, but only in global scope:

function caller_func(...)
{
...
my_func("var1");
print $var1; // Error, variable not defined in the scope of this function
}

Is there any way to indicate to the parser to create a variable in the scope of
the caller, instead of global scope? Of course I could do a global $var1
inside the function, but this would not be the prefered solution.

Thanks,
Jaime

Anon

Hi. You could try to parse the variables by reference instead of by value. Check this:

function MyFunc(&$value) { // notice the ampersand (&) before the $value param
   $value = "whatever";
   return true; // you can return false on an error or so...
}

function MyCallerFunc($value) {
   MyFunc($value); // notice you do not say: $value = MyFunc($value);
   return $value;
}

$mytestvar = "This is a test.";
echo MyCallerFunc($mytestvar);

Note you do NOT say $value = MyFunc($value), because that would first set $value to the desired value and then override that value with the true or false result from the MyFunc function.

Hope this helps you through a little.

Greetz,

Vincent Driessen
Venlo, The Netherlands