JavaScript
<!DOCTYPE HTML>
<html lang="ja-JP">
<head>
<meta charset="UTF-8">
<title></title>
</head>
<body>
</body>
<script type="text/javascript">
var data = 1254.6789;
var str = "";
str += Math.ceil(data) + "<br>";
str += Math.ceil(data * 100) / 100 + "<br>";
str += Math.ceil(data / 100) * 100 + "<br>";
document.getElementsByTagName("body")[0].innerHTML = str;
</script>
</html>
PHP
<?php
header("Content-type: text/html; charset=utf-8");
$data = 1254.6789;
//小数点以下を切り上げ
echo ceil($data) . "<br>";
//小数第2位で切り上げ
echo ceil($data * 100) / 100 . "<br>";
//百の位で切り上げ
echo ceil($data / 100) * 100 . "<br>";
?>