Online PHP editor | refs for m3jUC

<?php function fNumString(string $numberString, string $decimalPoint = '.', string $thousandsSeparator = ','): string { [$integerPart, $decimalPart] = array_pad(explode('.', $numberString, 2), 2, null); $integerPart = strrev(preg_replace('/\d{3}(?=\d)/', '\0' . $thousandsSeparator, strrev($integerPart))); return $integerPart . ($decimalPart ? $decimalPoint . $decimalPart : ''); } echo fNumString('1000.382'), PHP_EOL; echo fNumString('99.01'), PHP_EOL; echo fNumString('1900000'), PHP_EOL; echo fNumString('19000000000000000000123.12399999999198');