Program to find the mid | function to find the midpoint of a line ; Driver Code
< ? php function midpoint ( $ x1 , $ x2 , $ y1 , $ y2 ) { echo ( ( float ) ( $ x1 + $ x2 ) / 2 . " ▁ , ▁ " . ( float ) ( $ y1 + $ y2 ) / 2 ) ; } $ x1 = -1 ; $ y1 = 2 ; $ x2 = 3 ; $ y2 = -6 ; midpoint ( $ x1 , $ x2 , $ y1 , $ y2 ) ; ? >