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PHP tanh() Function

< PHP Math Reference

Example

Return the hyperbolic tangent of different numbers:

<?php
echo(tanh(M_PI_4) . "<br>");
echo(tanh(0.50) . "<br>");
echo(tanh(-0.50) . "<br>");
echo(tanh(5) . "<br>");
echo(tanh(10) . "<br>");
echo(tanh(-5) . "<br>");
echo(tanh(-10));
?>

Definition and Usage

The tanh() function returns the hyperbolic tangent of a number, which is equal to sinh(x)/cosh(x).

Syntax

tanh(number);

Parameter	Description
number	Required. Specifies a number

Technical Details

Return Value:	The hyperbolic tangent of number
Return Type:	Float
PHP Version:	4.1+

< PHP Math Reference