number format problem

[mindapolis]

hi, I have a function that calculates sales tax and it should put 2 numbers  after the decimal point but it 's putting 5 numbers after the decimal point.  Can someone help me figure out why? 

 

function TotalSalesTax($price)
{
	$salesTax = .07;
	$TotalSalesTax = $price * $salesTax;
    number_format($TotalSalesTax, 2);	
	return $TotalSalesTax;		
}

[PFMaBiSmAd]

number_format returns the formated string. You are not using the value that number_format returns. Your function is returning the original value that is still in $TotalSalesTax.

 

[mindapolis]

I'm not quitefollowing you.  It 's returning $TotalSalesTax

[PFMaBiSmAd]

The light-blue number_format text are links to the php manual section for that function. I recommend that you look at the example code at that link.