PHP tanh() Function
Definition and Usage
The tanh() function returns the hyperbolic tangent.
Syntax
tanh(x)
| Parameter | Description |
|---|---|
| x | Required. A number. |
Description
Returns x The hyperbolic tangent value, defined as sinh(arg)/cosh(arg).
Example
In this example, we will return the hyperbolic tangent of different numbers:
<?php echo(tanh(M_PI_4)); echo(tanh(0.50)); echo(tanh(-0.50)); echo(tanh(5)); echo(tanh(10)); echo(tanh(-5)); echo(tanh(-10)) ?>
Output:
0.655794202633 0.46211715726 -0.46211715726 0.999909204263 0.999999995878 -0.999909204263 -0.999999995878
