Search code examples
phpstringdigits

Limiting Number of Digits in PHP

I'm displaying how large a list of files are in a table using PHP. I'd like to display how big they are in megabytes instead of the default bytes. The problem I'm having is that I get extremely long decimals, which is impractical for this purpose.

Here's what I have so far:

print((filesize("../uploads/" . $dirArray[$index])) * .000000953674316 . " MB");

Which correctly converts the value, but changes, for example, 71 B to 6.7710876436E-5 MB.

I think the E-5 thing is like x10^-5 which would probably add up correctly, but is there a way I can cut off how many numbers it goes down to? If it displays as "00.00 MB" that's fine by me, most file are going to be much bigger than this test one.

Solution

  • With good old printf :

    printf("%.2f MB",filesize("../uploads/" . $dirArray[$index]) * .000000953674316);

    Maybe, because it's a bit clearer what the intention is:

    printf("%.2f MB",filesize("../uploads/" . $dirArray[$index]) / (1024 * 1024));