It returns maximum value

Example

<?php
echo max(10,11,17)
?>

Output

17

It returns natural logarithm

Example

<?php
echo log(17)
?>

Output

2.8332133440562

It returns log(1+x)

Example

<?php
echo log1p(1)
?>

Output

0.69314718055995

It returns  Base-10 logarithm value

<?php
echo log10(1);
?>

Output

0

It returns  combined linear congruential generator

Example

<?php
echo lcg_value();
?>

Output

0.91341065078248

It checks whether a value is not a number

Example

<?php
echo is_nan(acos(2.01));
?>

Output

1

It checks whether a value is a legal infinite number

Example

<?php
echo is_infinite(log(0));
?>

Output

1

It checks whether a value is a legal finite number

Example

<?php
echo is_finite(2000);
?>

Output

1

It calculate the length of the hypotenuse of a right-angle triangle

Example

<?php
echo hypot(1,7);
?>

Output

7.0710678118655

It converts Hexadecimal to decimal

Example

<?php
echo hexdec(17);
?>

Output

23