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@ 2014-10-29T21:42:00Z

<?php
$price = floatval(10);
$our_price = $price - floatval(.10);

echo number_format($our_price, 2, '.', '');  ;

Output
Performance
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References
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number_format: documentation ( source)

preferences:dark modelive preview

44.16 ms | 402 KiB | 5 Q