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.
PHP exp() Function has the following syntax.
|num||Required. Specifies the exponent|
|Return Value||'e' raised to the power of x|
Return 'e' raised to the power of different numbers:
<?php echo(exp(0) . "\n"); echo(exp(1) . "\n"); echo(exp(10) . "\n"); echo(exp(4.8)); ?>
The code above generates the following result.