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PHP Quiz PHP CertificatePHP exp() Function
Complete PHP Math Reference
Definition and Usage
The exp() function returns the value of Ex, where E is Euler's constant (approximately 2.7183) and x is the number passed to it.
Syntax
exp(x)
| Parameter | Description |
|---|---|
| x | Required. A number |
Tips and Notes
Tip: E is the Euler's constant, which is the base of natural logarithms (approximately 2.7183).
Example
In the following example we will use the exp() function on different numbers:
<?php
echo(exp(1) . "<br />");
echo(exp(-1) . "<br />");
echo(exp(5) . "<br />");
echo(exp(10))
?>
echo(exp(1) . "<br />");
echo(exp(-1) . "<br />");
echo(exp(5) . "<br />");
echo(exp(10))
?>
The output of the code above will be:
2.718281828459045
0.36787944117144233
148.4131591025766
22026.465794806718
0.36787944117144233
148.4131591025766
22026.465794806718
Complete PHP Math Reference
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