PHP exp() Function
Example
Return 'e' raised to the power of different numbers:
<?php
echo(exp(0) . "<br>");
echo(exp(1) . "<br>");
echo(exp(10) . "<br>");
echo(exp(4.8));
?>
Run example »
Definition and Usage
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
exp(x);
| Parameter | Description |
|---|---|
| x | Required. Specifies the exponent |
Technical Details
| Return Value: | 'e' raised to the power of x |
|---|---|
| Return Type: | Float |
| PHP Version: | 4+ |
PHP Math Reference
