PHP math functions

PHP supports and comes with many inbuilt math functions, which always comes handy while performing complex calculation rather than writing your own logic for doing mathematical operations, which can be time-consuming.

We have summarized all important math functions at one place with examples.

So let’s take a look.

	Math Function name	Description
1.	max	Finds the highest value
2.	min	Finds the lowest value
3.	rand	Generates a random number
4.	srand	Seed the random number generator
5.	getrandmax	Shows the largest possible random value
6.	round	Rounds a float value
7.	pi	Gets the value of PI
8.	pow	Exponential expression
9.	sqrt	Square root
10.	mt_rand	Generates a better random value
11.	mt_srand	Seeds the better random number generator
12.	mt_getrandmax	Shows the largest possible random value
13.	log	Returns the natural logarithm
14.	log1p	Returns log(1+number)
15.	log10	Base 10 logarithm
16.	sin	Sine
17.	cos	Cosine
18.	tan	Tangent
19.	sinh	Hyperbolic Sine
20.	cosh	Hyperbolic Cosine
21.	tanh	Hyperbolic Tangent
22.	asin	Arc Sine
23.	acos	Arc Cosine
24.	atan	Arc Tangent
25.	asinh	Inverse hyperbolic Sine
26.	acosh	Inverse hyperbolic Cosine
27.	atanh	Inverse hyperbolic Tangent
28.	rad2deg	Converts the radian number to the equivalent number in degrees
29.	deg2rad	Converts the number in degrees to the radian equivalent
30.	exp	Calculates the exponent of e
31.	is_nan	Determine whether a value is not a number
32.	ceil	Rounds fractions up
33.	floor	Rounds fractions down
34.	fmod	Returns the floating-point remainder of the division of the arguments
35.	abs	Absolute value
36.	bindec	Converts binary to decimal
37.	decbin	Converts decimal to binary
38.	dechex	Converts decimal to hexadecimal
39.	decoct	Converts decimal to octal
40.	hexdec	Converts hexadecimal to decimal
41.	octdec	Converts octal to decimal
42.	hypot	Returns hypotenuse = sqrt(num1num1 + num2num2)
43.	is_finite	Determines whether a value is legal finite number
44.	is_infinite	Determines whether a value is infinite

Some examples

<?php

echo "<h3>PHP Math Functions</h3>";

echo "rand() = " . rand() . "<br>"; // any random number

echo "pi() = " . pi() . "<br>"; // 3.1415926535898

echo "round(3.141592653,2) = " . round(3.141592653,2) . "<br>"; // 3.14

echo "pow(3,4) = " . pow(3,4) . "<br>"; // 81

echo "sqrt(25) = " . sqrt(25) . "<br>"; // 5

echo "max(2,6) = " . max(2,6) . "<br>"; // 6

echo "log(10) = " . log(10) . "<br>"; // 2.302585092994

echo "log10(10) = " . log10(10) . "<br>"; // 1

echo "deg2rad(60) = " . deg2rad(60) . "<br>"; // 1.0471975511966

echo "rad2deg(0.78539816339745) = " . rad2deg(0.78539816339745) . "<br>"; // 45

echo "sin(30) = " . sin(deg2rad(30)) . "<br>"; // 0.5

echo "exp(0) = " . exp(0) . "<br>"; // 1

echo "abs(0.10500) = " . abs(0.10500) . "<br>"; // 0.105

echo "hypot(3,4) = " . hypot(3,4) . "<br>"; // 5

echo "decbin(5) = " . decbin(5) . "<br>"; // 101

echo "bindec(101) = " . bindec(101) . "<br>"; // 5

echo "decoct(12) = " . decoct(12) . "<br>"; // 14

echo "octdec(14) = " . octdec(14) . "<br>"; // 12

echo "dechex(15) = " . dechex(15) . "<br>"; // f

?>

Output

PHP Math Functions

rand() = 22515
pi() = 3.1415926535898
round(3.141592653,2) = 3.14
pow(3,4) = 81
sqrt(25) = 5
max(2,6) = 6
log(10) = 2.302585092994
log10(10) = 1
deg2rad(60) = 1.0471975511966
rad2deg(0.78539816339745) = 45
sin(30) = 0.5
exp(0) = 1
abs(0.10500) = 0.105
hypot(3,4) = 5
decbin(5) = 101
bindec(101) = 5
decoct(12) = 14
octdec(14) = 12
dechex(15) = f