PHP Rounding

[sarcastic6]

I'm trying to figure out why this isn't working.

Consider the following code:

$salesTaxAmount = $subtotal * ($salesTaxPercent / 100);
$salesTax = round($salesTaxAmount , 2);
echo "Sales tax amount (calculated) is: " . $salesTaxAmount . ", ";
echo "sales tax (rounded) is: " . $salesTax . ", ";
echo "\$salesTaxAmount is a " . gettype($salesTaxAmount) . ", ";
echo "\$salesTax is a " . gettype($salesTax);

It outputs this:

Sales tax amount (calculated) is: 2.325, 
sales tax (rounded) is: 2.32, 
$salesTaxAmount is a double, 
$salesTax is a double

And yet if I do a round(2.325, 2) manually, I get the CORRECT value, 2.33. What is going on?

 

[KingKaeru]

what are the values of $subtotal and $salesTaxPercent?

--KK

 

[sarcastic6]

subtotal (calculated) is: 38.75, 
salesTaxPercent (from DB) is: 6, 
sales tax amount (calculated) is: 2.325, 
sales tax (rounded) is: 2.32, 
$salesTaxAmount is a double, 
$salesTaxAmount is a double

 

[KingKaeru]

http://us4.php.net/manual/en/function.round.php

try those workarounds.

--KK

 

[sarcastic6]

Aw, that's not fair. 30 minutes ago, all user comments were unavailable! Ah well, either way, got it working now, thank you.

 

[KingKaeru]

Aw, that's not fair. 30 minutes ago, all user comments were unavailable! Ah well, either way, got it working now, thank you.

user notes are still down :/

Had to go to a mirror for that.

--KK

 

[sarcastic6]

Ah, I see now. I had thought they were completely unavailable. I wish I had learned that trick a few days ago! Strange, I wonder why they didn't mention that in the news post...