<?php
echo '<pre>';


$a = 1;
$b = 2;
$c = 4;

echo "\n\n(a|b)&...\n---\n";
echo ($a|$b)&$a; 
echo "\n";
echo ($a|$b)&$b; 
echo "\n";
echo ($a|$b)&$c;

echo "\n\n(b|c)&...\n---\n";
echo ($b|$c)&$a; 
echo "\n";
echo ($b|$c)&$b; 
echo "\n";
echo ($b|$c)&$c; 

echo "\n\n(a|b|c)&...\n---\n";
echo ($a|$b|$c)&$a;
echo "\n";
echo ($a|$b|$c)&$b;
echo "\n";
echo ($a|$b|$c)&$c;
echo "\n";


/*

3
---
%2 = 1 then a 
/2 = 1

%2 = 1 then b 
0 end


6
---
%2 = 0  NOT A
/2 = 3 

%2 = 


*/