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❮ Func Curl_Reset Func Date Date Create ❯

PHP 5 Math Functions

PHP Math Introduction

Math functions can handle values within the integer and float ranges.

Installation

PHP Math functions are part of the PHP core. No installation is required to use these functions.

PHP 5 Math Functions

Function Description
abs() Returns the absolute value of a number.
acos() Returns the arc cosine of a number.
acosh() Returns the inverse hyperbolic cosine of a number.
asin() Returns the arc sine of a number.
asinh() Returns the inverse hyperbolic sine of a number.
atan() Returns the arc tangent of a number.
atan2() Returns the arc tangent of two variables x and y.
atanh() Returns the inverse hyperbolic tangent of a number.
base_convert() Converts a number between arbitrary bases.
bindec() Converts a binary number to a decimal number.
ceil() Rounds a number up to the nearest integer.
cos() Returns the cosine of a number.
cosh() Returns the hyperbolic cosine of a number.
decbin() Converts a decimal number to a binary number.
dechex() Converts a decimal number to a hexadecimal number.
decoct() Converts a decimal number to an octal number.
deg2rad() Converts a degree value to a radian value.
exp() Returns E x.
expm1() Returns E x - 1.
floor() Rounds a number down to the nearest integer.
fmod() Returns the floating point remainder of x/y.
getrandmax() Returns the maximum value that can be returned by a call to rand().
hexdec() Converts a hexadecimal number to a decimal number.
hypot() Calculates the hypotenuse of a right-angle triangle.
is_finite() Checks whether a value is finite.
is_infinite() Checks whether a value is infinite.
is_nan() Checks whether a value is not a number.
lcg_value() Returns a pseudo random number in the range (0, 1).
log() Returns the natural logarithm (base E) of a number.
log10() Returns the base-10 logarithm of a number.
log1p() Returns log(1+number).
max() Returns the highest value in an array, or the highest value of several specified values.
min() Returns the lowest value in an array, or the lowest value of several specified values.
mt_getrandmax() Returns the maximum value that can be returned by a call to mt_rand().
mt_rand() Generates a random integer using the Mersenne Twister algorithm.
mt_srand() Seeds the Mersenne Twister random number generator.
octdec() Converts an octal number to a decimal number.
pi() Returns the value of PI.
pow() Returns x raised to the power of y.
rad2deg() Converts a radian value to degrees.
rand() Returns a random integer.
round() Rounds a floating-point number.
sin() Returns the sine of a number.
sinh() Returns the hyperbolic sine of a number.
sqrt() Returns the square root of a number.
srand() Seeds the random number generator.
tan() Returns the tangent of a number.
tanh() Returns the hyperbolic tangent of a number.

PHP 5 Predefined Math Constants

Constant Value Description PHP Version
INF INF Infinity PHP 4
M_E 2.7182818284590452354 Returns e PHP 4
M_EULER 0.57721566490153286061 Returns the Euler constant PHP 4
M_LNPI 1.14472988584940017414 Returns the natural logarithm of PI: log_e(pi) PHP 5.2
M_LN2 0.69314718055994530942 Returns the natural logarithm of 2: log_e 2 PHP 4
M_LN10 2.30258509299404568402 Returns the natural logarithm of 10: log_e 10 PHP 4
M_LOG2E 1.4426950408889634074 Returns the base-2 logarithm of E: log_2 e PHP 4
M_LOG10E 0.43429448190325182765 Returns the base-10 logarithm of E: log_10 e PHP 4
M_PI 3.14159265358979323846 Returns Pi PHP 4
M_PI_2 1.57079632679489661923 Returns Pi/2 PHP 4
M_PI_4 0.78539816339744830962 Returns Pi/4 PHP 4
M_1_PI 0.31830988618379067154 Returns 1/Pi PHP 4
M_2_PI 0.63661977236758134308 Returns 2/Pi PHP 4
M_SQRTPI 1.77245385090551602729 Returns the square root of PI: sqrt(pi) PHP 5.2
M_2_SQRTPI 1.12837916709551257390 Returns 2/square root of PI: 2/sqrt(pi) PHP 4
M_SQRT1_2 0.70710678118654752440 Returns the square root of 1/2: 1/sqrt(2) PHP 4
M_SQRT2 1.41421356237309504880 Returns the square root of 2: sqrt(2) PHP 4
M_SQRT3 1.73205080756887729352 Returns the square root of 3: sqrt(3) PHP 5.2
NAN NAN Not a Number PHP 4
PHP_ROUND_HALF_UP 1 Rounds away from zero when encountering .5 PHP 5.3
PHP_ROUND_HALF_DOWN 2 Rounds towards zero when encountering .5 PHP 5.3
PHP_ROUND_HALF_EVEN 3 Rounds to even when encountering .5 PHP 5.3
PHP_ROUND_HALF_ODD 4 Rounds to odd when encountering .5 PHP 5.3
❮ Func Curl_Reset Func Date Date Create ❯