- assert: documentation ( source)
- var_dump: documentation ( source)
- round: documentation ( source)
- var_export: documentation ( source)
<?php
$a = 8.9;
$b = var_export(round($a, 2), true);
var_dump(assert($a == $b));
echo $a ." \n";
echo $b;
var_dump(gettype($a), gettype($b));
echo "\n\n\n";
assert('8.9000000000000004' != 8.9);