hypot
  (PHP 4 >= 4.0.7, PHP 5)
hypot — 
   Calculate the length of the hypotenuse of a right-angle triangle
  
  
 
  Description
  
   float hypot
    ( float $x
   , float $y
   )
  
  
 
  Parameters
  
   
    - 
     x
     
- 
      
       Length of first side
       
- 
     y
     
- 
      
       Length of second side
       
 
 
  Return Values
  
   Calculated length of the hypotenuse