PHP Math Functions

The PHP has a number of math functions that are available to use. These functions are listed below in alphabetical order. For more details about any one of these, please visit its page.

PHP Math Functions

Basic Math Functions

Functions	Description
abs()	Returns the absolute (positive) value of the given number.
base_convert()	Converts a number from one number base to another
bindec()	Returns the decimal equivalent of the binary number represented by the binary string argument.
ceil()	Rounds the given number up to the nearest integer.
decbin()	Returns a string which is the binary representation of a decimal number.
dechex()	Returns a string which is the hexadecimal representation of a decimal number.
decoct()	Returns a string which is the octal representation of a decimal number.
deg2rad()	Converts an angle in degrees to an angle in radians.
floor()	Rounds the given number down to the nearest integer.
fmod()	Returns remainder of the division of arguments.
getrandmax()	Returns the largest possible value returned by rand()
hexdec()	Returns the decimal equivalent of the hexadecimal number represented by the hexadecimal string argument.
intdiv()	Performs integer division
is_finite()	Checks whether a value is finite or not
is_infinite()	Checks whether a value is infinite or not
is_nan()	Checks whether a value is 'not-a-number'
lcg_value()	Returns a pseudo random number in a range between 0 and 1
max()	Returns the maximum value in an array, or the maximum value among specified values.
min()	Returns the minimum value in an array, or the minimum value among specified values.
mt_getrandmax()	Returns the largest possible value returned by mt_rand()
mt_rand()	Generates a random integer using Mersenne Twister algorithm
mt_srand()	Seeds the Mersenne Twister random number generator
octdec()	Returns the decimal equivalent of the octal number represented by the octal string argument.
pi()	Returns the value of PI.
pow()	Returns base raised to the power of exponent.
rad2deg()	Converts an angle in radians to an angle in degrees.
rand()	Generates a random integer
round()	Returns the rounded version of a floating-point number
sqrt()	Returns the square root of the given number.
srand()	Seeds the random number generator

Logarithmic Math Functions

Functions	Description
exp()	Returns the exponent of e.
expm1()	Returns the exponent of e minus 1, i.e., e^x-1.
log()	Returns the natural logarithm of a given number.
log10()	Returns the base-10 logarithm of a given number.
log1p()	Returns the natural logarithm of (1+number), i.e., log(1+number).

Trigonometric Math Functions

Functions	Description
sin()	Returns the trigonometric sine of an angle.
cos()	Returns the trigonometric cosine of an angle.
tan()	Returns the trigonometric tangent of an angle.
asin()	Returns the arc sine of a value.
acos()	Returns the arc cosine of a value.
atan()	Returns the arc tangent of a value.
atan2()	Returns the angle theta from the conversion of rectangular coordinates (x, y) to polar coordinates (r, theta).
hypot()	Returns square root of sum of squares of two arguments, i.e., sqrt(x² +y²).

Hyperbolic Math Functions

Functions	Description
sinh()	Returns the hyperbolic sine of a value.
cosh()	Returns the hyperbolic cosine of a value.
tanh()	Returns the hyperbolic tangent of a value.
asinh()	Returns the inverse hyperbolic sine of a value
acosh()	Returns the inverse hyperbolic cosine of a value
atanh()	Returns the inverse hyperbolic tangent of a value