PHP/Math/Math Functions

Difference between ceil and floor

<?
$my_double = 4.7;
$my_int = ceil($my_double); 
echo($my_int);

$my_double = -4.7;
$my_int = floor($my_double);
echo($my_int);
 
?>

Exp

<?
$test_449 = 449.0;
$test_449 = pow(10, exp(log(log10($test_449))));
print("test_449 is $test_449<BR>");
?>

Floor in action

<?
$my_int = floor(4.7); 
echo($my_int);

$my_int = floor(-4.7); 
echo($my_int);

?>

Get the Power

<?
echo pow(19, 5);
?>

rand demo

<?
echo rand(0,576);
?>

Round in action

<?
$my_int = round(4.7); 
echo($my_int);
$my_int = round(-4.7);
echo($my_int);
$my_int = round(-4.5);
echo($my_int);
?>

Using the arbitrary-precision functions for exact integer arithmetic

<?
for ($x = 1; $x < 25; $x++) {
  print("$x to the $x power is " . bcpow($x, $x) . "<BR>");
}
?>