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<?php function func(string $str): string { echo strlen($str) . PHP_EOL; echo strpos($str, '.') . PHP_EOL; while(strpos('0', $str) == 1) { $str = substr($str, 0, 1); } while(strpos('.', $str) > 1 && strpos($str, '0') == strlen($str)) { $str = rtrim($str, '0'); } return $str; } echo(func('2.123000')) . PHP_EOL; var_dump(func('2.123000') === '2.123'); var_dump(func('2.0') === '2'); var_dump(func('123') === '123'); var_dump(func('20') === '20'); var_dump(func('20.0000000000000000000000000000000000000010000') === '20.000000000000000000000000000000000000001');
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