how to do decimal point to be 0?

There's a question.
if don't need decimal point, how to do?


$num="5.8";
$num=round ($num,0);
echo "$num";
the result is 6

but i'd like it to be 5.

i need your help.
thank you

 

try floor() function

 

it can work.
thank you so much

 

Another handy one is number_format( $number, $numberOfDecimalPlacesToShow );

So number_format( "6.4", 2 ) would be 6.40. The fun part about this function also is it can do currencies (default to US), so:

number_format( "4346.1246", 2 ) would be 4,346.12