decimal places

[djkanebo]

say i have $a=1.34563465387634783 etc

how do i get this to say 3 or 4 decimal places?

i know this may be simple for most of u but have never had to do it b4 in php!

[thna_brianb]

$a=1.34563465387634783;

$a = round ( $a, 4);