PHP/Math/Math Functions

Материал из Web эксперт
Перейти к: навигация, поиск

Difference between ceil and floor

   <source lang="html4strict">

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

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

?>

      </source>
   
  


Exp

   <source lang="html4strict">

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

      </source>
   
  


Floor in action

   <source lang="html4strict">

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

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

?>

      </source>
   
  


Get the Power

   <source lang="html4strict">

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

      </source>
   
  


rand demo

   <source lang="html4strict">

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

      </source>
   
  


Round in action

   <source lang="html4strict">

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

      </source>
   
  


Using the arbitrary-precision functions for exact integer arithmetic

   <source lang="html4strict">

<? for ($x = 1; $x < 25; $x++) {

 print("$x to the $x power is " . bcpow($x, $x) . "
");

} ?>

      </source>