It calculates the value of E^x-1

Example

<?php
echo expm1(17);
?>

Output

24154952.753575

It calculates the exponent of e

Example

<?php
echo exp(17);
?>

Output

24154952.753575

It converts the number in degrees to the radian equivalent

Example

<?php
echo deg2rad(45);
?>

Output

0.78539816339745

It converts a decimal to octal

Example

<?php
echo decoct(17);
?>

Output

21

It converts a decimal to hexadecimal

Example

<?php
echo dechex(17);
?>

Output

11

It converts a decimal to binary

Example

<?php
echo decbin(17);
?>

Output

10001

It returns Hyperbolic cosine .

Example

<?php
echo cosh(90);
?>

Output

6.1020164715892E+38

It returns cosine value .

Example

<?php
echo cos(90);
?>

Output

-0.44807361612917

It round the fractions up

Example

<?php
echo ceil(5.2);
?>

Output

6

It converts binary number to decimal number

Example

<?php
echo bindec(“0011”);
?>

Output

3