$dogs = array('A' => 'AA', 'Bud' => 'BB', 'C' => 'D');
$birds = array('parrot', 'magpie', 'lorakeet', 'cuckoo');
printf("There are %d dogs and %d birds.
", count($dogs), count($birds));
$birds[] = 'ibis';
printf("There are %d birds:
", count($birds));
printf("%s
\n", var_export($birds, TRUE));
$birds[10] = 'heron';
unset($birds[3]);
printf("There are %d birds:
", count($birds));
printf("%s
\n", var_export($birds, TRUE));
?>