PHP round to integer

Question

I want to round a number and I need a proper integer because I want to use it as an array key. The first \"solution\" that comes to mind is:

$key = (int)roun         


        

Answer 1

To round floats properly, you can use:

• ceil($number): round up
• round($number, 0): round to the nearest integer
• floor($number): round down

Those functions return float, but from Niet the Dark Absol comment: "Integers stored within floats are always accurate, up to around 2^51, which is much more than can be stored in an int anyway."