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<!DOCTYPE html>
<html>
<body>
​
<?php
$number = 123;
$txt = sprintf("With 2 decimals: %1\$.2f
<br>With no decimals: %1\$u",$number);
echo $txt;
?>
​
</body>
​
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</html>
​
With 2 decimals: 123.00
With no decimals: 123