select
d.date1,
ylit,
round(d.fat,1),
round(d.snf,1),
rs,
round(rs*ylit,2),
nlit,
kalit,
jlit
from daily_milk as d,
$rate_chart[0] as r
where d.fat=r.fat
&& d.snf=r.snf
&& mtype='$mtype'
&& scode='$society_code_op[0]'
&& shift='सकाळ'
&& d.date1 between '$date1' and '$date2'
&& d.date1 between r.date1 and r.date2
order by d.date1

FLOOR(column_name * 100) / 100

ROUND(column_name, 2)

$var = 1.787;
echo number_format((float)(FLOOR($var * 100) / 100), 2, '.', '');