I know you can refresh the page instantly in PHP using header("refresh: 0;");
You can also put your own delay, i.e. 3 seconds like this header("refresh: 3;");
My question is, is it possible to put a delay of less than one second, i.e. one tenth of second? header("refresh: 0.1;");
Tried it and it works
For example: header("refresh: 0.25;");
header("refresh: 0.1;");
header("refresh: 0.75;");
header("refresh: 0.5;");
all seem to work.