Customize round funtion in php

function customizeRound($number){
    //this will convert 0.01 to 0.02 (But standard round function will not affect it as 1 in 0.01 is less than five)
    if($number > number_format($number,2)){
        $number=$number+ .01;
     }       return $number=number_format($number ,2);
 }

 //--usage--
 $number = 0.002;
 echo customizeRound($number);