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

It shows largest possible random value

Example

<?php
echo getrandmax();
?>

Output

2147483647

It returns the remainder of the division.

Example

<?php
echo fmod(4,7);
?>

Output

4

It round fractions down

Example

<?php
echo floor(1.7);
?>

Output

1