<?php function validateTwoDecimalOrNull($number) { if($number == null || preg_match('/^[0-9]+\.[0-9]{2}$/', $number)) return true; else return false; } echo "Greater than 2 decimal places=".validateTwoDecimalOrNull(12.22444); echo PHP_EOL; echo "Null value=".validateTwoDecimalOrNull(null); echo PHP_EOL; echo "2 decimal places=".validateTwoDecimalOrNull(12.22); ?>
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