Program to find the sum of a Series 1 + 1 / 2 ^ 2 + 1 / 3 ^ 3 + â €¦ . . + 1 / n ^ n | Function to calculate the following series ; Driver Code
< ? php function Series ( $ n ) { $ i ; $ sums = 0.0 ; $ ser ; for ( $ i = 1 ; $ i <= $ n ; ++ $ i ) { $ ser = 1 / pow ( $ i , $ i ) ; $ sums += $ ser ; } return $ sums ; } $ n = 3 ; $ res = Series ( $ n ) ; echo $ res ; ? >