function to round up a float number to next point five like 3.3 to 3.5, 3.8 to 4

If you are from the shipping industry you face this problem a lot of time where you charge per 0.5 kg. In this kind of case, you need to make the weight from float to round up.

here is a php function to achieve that.

	<?php
	/**
	* * Problem Statement:
	* * passing a floating point number to a function, the function will round the number to
	* * the nearest point five and return the result.
	*
	* * Example:
	* * roundUpToNextFive(3.7) // returns 4.0
	* * roundUpToNextFive(3.3) // returns 3.5
	* * roundUpToNextFive(3.8) // returns 4.0
	* * roundUpToNextFive(1.2) // returns 1.5
	*/
	/**
	* Rounds the given number up to the next five.
	*
	* @param float $number
	* @return float
	*/
	function roundUpToNextFive(float $number)
	{
	printf("The number is %.2f \n", $number);
	$decimalPart = $number - floor($number);
	return ($decimalPart > 0.50 ? ceil($decimalPart) : (ceil($decimalPart) / 2)) + floor($number);
	}
	printf("The next closest five is %.2f \n", roundUpToNextFive(5.33));

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