Guys i don't get why am i getting this output in this php code? Can you explain please? :     <?php     $i = 0;     $func1 = function() use ($i) { echo "$i"; };$func2 = function() use (&$i) { echo "$i"; };     for ( $i=1; $i<=5; $i++ ) {         $func1();         $func2();     } ?>

output: 0 1 0 2 0 3 0 4 0 5