PHP sinh() Function

Return the hyperbolic sine of different numbers:

<?php
echo(sinh(3) . "<br>");
echo(sinh(-3) . "<br>");
echo(sinh(0) . "<br>");
echo(sinh(M_PI) . "<br>");
echo(sinh(M_PI_2));
?>

Definition and Usage

The sinh() function returns the hyperbolic sine of a number, which is equal to (exp(number) - exp(-number))/2).

sinh( number);

Parameter	Description
number	Required. Specifies a number

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