Return the hyperbolic cosine of different numbers in PHP

Description

The following code shows how to return the hyperbolic cosine of different numbers.

Example

  /* w  w w . j a v a  2s.  c  o  m*/
<?php
    echo(cosh(3) . "<br>");
    echo(cosh(-3) . "<br>");
    echo(cosh(0) . "<br>");
    echo(cosh(M_PI) . "<br>");
    echo(cosh(2*M_PI));
?>

The code above generates the following result.