OO invalid argument in foreach

[Anon]

I've got a class that looks something like

var $myarray = array();
Class A {
function A($array) {
$this->myarray = $array;
}
}

then I've got a class that consumes a class A

Class Foo {
function doSomethingWithA($array) {
foreach ($array as $element) {
print $element;
}
}
}

Now, when I initally go to a php script that includes class Foo, I get the following error:

Invalid argument supplied for foreach() in .....

then, if i submit a form on that page that then calls class Foo with a new class A, everything works fine. Why do I initally get an error?

Thanks,
Jay

[van__]

because this...
foreach ($array as $element)

is looking for an '$element'
while this: var $myarray = array();
is an empty array with no '$element'

you can do a couple things here:
var $myarray = array(true);

..or test to make sure the array is set

if (is_array($array)) {
foreach ($array as $element) {
print $element;
}
}