Math PHP

Math in PHP, has in-built math functions, which makes mathematical operations easier.

Math functions	Description
abs	Returns absolute value
bindec	Converts a binary into decimal number
exp	Returns e to the power of n (where n is given number)
is_nan	Checks given value is number or not
is_finite	Checks given value is finite or not
is_infinite	Checks given value is infinite or not
max	Returns the highest value from given numbers
min	Returns the lowest value from given numbers
octdec	Converts a octal into decimal number
pi	Gives the value of PI
pow	Returns the power of given number.
sqrt	Returns the square root of given number.

abs

<?php
 $a = -20;
 echo abs($a);
?>

<?php
 echo pi();
?>

<?php
 $p = 3;
 $n = 20;
 echo pow($n, $p);
?>

<?php
 $p = 3;
 $n = 20;
 echo sqrt($n, $p);
?>