text: Simple PhP program to find MSB number for given n .
code: < ? php function setBitNumber ( $ n ) { if ( $ n == 0 ) return 0 ; $ msb = 0 ; $ n = $ n / 2 ; while ( $ n != 0 ) { $ n = $ n / 2 ; $ msb ++ ; } return ( 1 << $ msb ) ; }