php remove trailing zeros of a decimal number

Method to remove or strip trailing zeros of a decimal number:

function clean_num( $num ){
	$pos = strpos($num, '.');
	if($pos === false) { // it is integer number
		return $num;
	}else{ // it is decimal number
		return rtrim(rtrim($num, '0'), '.');
	}
}

Works on numbers: 0.02=0.02; 4.000=4; 80=80.

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