Get the inverse hyperbolic cosine of different numbers in PHP

Description

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

Example

/* w  ww. j  a v  a2 s  . c om*/
<?php
    echo(acosh(7) . "<br>");
    echo(acosh(56) . "<br>");
    echo(acosh(2.45));
?>

The code above generates the following result.