<?php
function create_closure( $count ) {
    return function() use ( &$count ) {
        return $count--;
    };
}
$closure = create_closure( 10 );
$another_closure = create_closure( 20 );

echo $closure(); // 10
echo $another_closure(); // 20
echo $closure(); // 9
echo $closure(); // 8
echo $another_closure(); // 19