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PHP cosh() Function

Complete PHP Math Reference

Definition and Usage

The cosh() function returns the hyperbolic cosine of a number (equivalent to (exp(x) + exp(-x)) / 2).

Syntax

cosh(x)

Parameter	Description
x	Required. A number

Example

In the following example we will return the hyperbolic cosine of different numbers:

<?php
echo(cosh(3) . "<br />");
echo(cosh(-3) . "<br />");
echo(cosh(0) . "<br />");
echo(cosh(M_PI) . "<br />");
echo(cosh(2*M_PI))
?>

The output of the code above will be:

10.0676619958
10.0676619958
1
11.5919532755
267.746761484