tryphp_func_math_hypot.php:
<!DOCTYPE html> <html> <body> <?php echo hypot(3,4) . "<br>"; echo hypot(4,6) . "<br>"; echo hypot(1,3) . "<br>"; echo sqrt(3*3+4*4); ?> </body> </html>
5
7.211102550928
3.1622776601684
5