Count of all even numbers in the range [ L , R ] whose sum of digits is divisible by 3 | Function to return the count of required numbers ; Count of numbers in range which are divisible by 6 ; Driver code
< ? php function countNumbers ( $ l , $ r ) { return ( ( int ) ( $ r / 6 ) - ( int ) ( ( $ l - 1 ) / 6 ) ) ; } $ l = 1000 ; $ r = 6000 ; echo ( countNumbers ( $ l , $ r ) ) ; ? >