Question

How to calculate the volume of a sphere in PHP

Answer 1

function sphere_volume($r) {
    return 4.0 / 3.0 * M_PI * pow($r, 3);
}
  
$radius = 5;
  
echo sphere_volume($radius) . "\n";

printf("%.2f", sphere_volume($radius));

 
 
/*
run:
 
523.5987755983
523.60
 
*/

 

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Answer 2

function sphere_volume($r) {
    return  (4.0 / 3.0) * M_PI * ($r * $r * $r);;
}
  
$radius = 5;
  
echo sphere_volume($radius) . "\n";

printf("%.2f", sphere_volume($radius));

 
 
/*
run:
 
523.5987755983
523.60
 
*/

 

70+ SQL courses for beginners and professionals