Square root of an integer | Returns floor of square root of x ; Base cases ; Starting from 1 , try all numbers until i * i is greater than or equal to x . ; Driver Code
< ? php function floorSqrt ( $ x ) { if ( $ x == 0 $ x == 1 ) return $ x ; $ i = 1 ; $ result = 1 ; while ( $ result <= $ x ) { $ i ++ ; $ result = $ i * $ i ; } return $ i - 1 ; } $ x = 11 ; echo floorSqrt ( $ x ) , " STRNEWLINE " ; ? >