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PHP tanh() Function

In this chapter you will learn:

  1. Definition for PHP tanh() Function
  2. Syntax for PHP tanh() Function
  3. Parameter for PHP tanh() Function
  4. Return for PHP tanh() Function
  5. Example - Return the hyperbolic tangent of different numbers

Definition

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

Syntax

PHP tanh() Function has the following syntax.

tanh(number);

Parameter

Parameter Is Required Description
numberRequired. Specifies a number

Return

Return Description
Return ValueThe hyperbolic tangent of number
Return TypeFloat

Example

Return the hyperbolic tangent of different numbers: 


<?php/*from j  a v a 2s .  c o m*/
echo(tanh(M_PI_4) . "\n");
echo(tanh(0.5) . "\n");
echo(tanh(-0.5) . "\n");
echo(tanh(5) . "\n");
echo(tanh(1) . "\n");
echo(tanh(-1) . "\n");
echo(tanh(-10));
?>

The code above generates the following result.

Next chapter...

What you will learn in the next chapter:

  1. Definition for PHP mysqli_affected_rows() Function
  2. Syntax for PHP mysqli_affected_rows() Function
  3. Parameter for PHP mysqli_affected_rows() Function
  4. Return for PHP mysqli_affected_rows() Function
  5. Example - prints out affected rows from different queries
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