<!-- Collection of code snippets by Arne Vajhøj -->
<!-- posted to eksperten.dk, usenet and other places (2002-now) -->
<?php
function roundup($n) {
    return ceil($n/100)*100;
}

function test($n) {
    echo $n . " -> " . roundup($n) . "\r\n";
}

test(98);
test(1234);
test(123432);
?>