<?php
// https://bugs.php.net/bug.php?id=66011
// Test script as provided in original bug report
$a = strval(round(1 / 3, 2));
var_dump($a, serialize($a));
// Code which does show this behaviour
// Behaviour as expected, see the warning as http://php.net/manual/en/language.types.float.php
$a = round(1 / 3, 2);
var_dump($a, serialize($a));