<!-- Collection of code snippets by Arne Vajhøj -->
<!-- posted to eksperten.dk, usenet and other places (2002-now) -->
<?php
$a1 = array(1, 2, 3);
echo serialize($a1) . "\r\n";
echo json_encode($a1) . "\r\n";
$a2 = array(4 => 1, 5 => 2, 6 => 3);
echo serialize($a2) . "\r\n";
echo json_encode($a2) . "\r\n";
?>