Next »
394/627
« Previous

PHP exp() Function

In this chapter you will learn:

  1. Definition for PHP exp() Function
  2. Syntax for PHP exp() Function
  3. Parameter for PHP exp() Function
  4. Return for PHP exp() Function
  5. Example - Return 'e' raised to the power of different numbers

Definition

The exp() function returns e raised to the power of x (ex).

'e' is the base of the natural system of logarithms (approximately 2.718282) and x is the number passed to it.

Syntax

PHP exp() Function has the following syntax.

exp(num);

Parameter

ParameterDescription
numRequired. Specifies the exponent

Return

Item Description
Return Value 'e' raised to the power of x
Return Type Float

Example

Return 'e' raised to the power of different numbers: 


<?php//java  2  s.  c  om
echo(exp(0) . "\n");
echo(exp(1) . "\n");
echo(exp(10) . "\n");
echo(exp(4.8));
?>

The code above generates the following result.

Next chapter...

What you will learn in the next chapter:

  1. Definition for PHP expm1() Function
  2. Syntax for PHP expm1() Function
  3. Parameter for PHP expm1() Function
  4. Return for PHP expm1() Function
  5. Example - 'e' raised to the power of x minus 1
Next »
« Previous