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  » imagecolorallocate()
  » htmlentities()
  » preg_match()
  » fopen()
  » header()
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  » ob_flush()
  » strstr()
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  » array2vars()
  » nl2br()
  » preg_split()
  » ereg()
  » ereg_replace()
  » urlencode()
  » readgzfile()

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PHP Functions

Function: exp

(PHP 3, PHP 4, PHP 5)

exp -- Calculates the exponent of e (the Neperian or Natural logarithm base)

Description

float exp ( float arg )

Returns e raised to the power of arg .

Note: 'e' is the base of the natural system of logarithms, or approximately 2.718282.

Example 1. exp() example

<?php
echo exp(12) . "\n";
echo exp(5.7);
?>

The above example will output:

1.6275E+005
298.87

Related Function(s)

  • log()
  • pow()
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