human readable size calculation crashes in PHP 8.0

[alex-savvii]

warpdrive/src/class-database-size-plugin.php

Lines 128 to 134 in 8c72987

	function readableBytes($bytes) {
	$i = floor(log($bytes) / log(1024));
	$sizes = array('B', 'KB', 'MB', 'GB', 'TB', 'PB', 'EB', 'ZB', 'YB');
	return sprintf('%.02F', $bytes / pow(1024, $i)) * 1 . ' ' . $sizes[$i];
	}
	}

Ignoring non-integer and negative values of $bytes there are two cases: $bytes == 0 and $bytes >= 1.

In case of $bytes >= 1: Everything is fine, the script runs fine the result is as expected.

In case of $bytes == 0: Things were slightly broken, if one ignored warnings, the result is "0 B", so as expected, however: In PHP 8.0 a division by zero is not a Warning anymore, but a Fatal error.

• $log(0) = -\infty$, so $1024^{-\infty} = 0$

This is fixable by inserting something like if ($bytes < 1) { return "0 B"; } just before the first line.