PHP microtime()

Answer 1

Use microtime(true) instead.

$time = microtime(true);
$micro = $time - floor($time); // microseconds part

Answer 2

Use $micro{$i}=$time{$i}; instead of $micro{i}=$time{i};

But much better way to do stuff like this:

list($timestamp, $microseconds) = split(" ", microtime());