<?php
function test()
{
static $a = 0, $b = 15;
$a++;
$b++;
return $a;
}
$rf = new ReflectionFunction('test');
// result - Array ( [a] => 0 [b] => 15 )
print_r( $rf->getStaticVariables() );
//call test function and print again static variables
test();
// result - Array ( [a] => 1 [b] => 16 )
print_r( $rf->getStaticVariables() );
?>