PHP exp() Function
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
| Parameter | Description |
|---|---|
| num | Required. 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//from w w w. j a v a2s .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.
