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<?php function func(string $str): string { if (strpos($str, ".") !== false) { while (substr($str, -1) === "0") { $str = substr($str, 0, strlen($str) - 1); } if (substr($str, -1) === ".") { $str = substr($str, 0, strlen($str) - 1); } } } var_dump(func("2.123000")); var_dump(func("2.0")); var_dump(func("123")); var_dump(func("20")); var_dump(func("20.0000000000000000000000000000000000000010000"));
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