(PHP 4, PHP 5, PHP 7) Hexadecimal to decimal

(PHP 4, PHP 5, PHP 7) Seed the better random number generator

(PHP 4, PHP 5, PHP 7) Octal to decimal number

(PHP 4, PHP 5, PHP 7) Converts the number in degrees to the radian equivalent

(PHP 4, PHP 5, PHP 7) Arc sine float asin ( float

(PHP 4, PHP 5, PHP 7) Calculates the exponent of e

(PHP 4 >= 4.1.0, PHP 5, PHP 7) Inverse hyperbolic tangent

(PHP 4, PHP 5, PHP 7) Decimal to hexadecimal

(PHP 4, PHP 5, PHP 7) Round fractions up float

(PHP 4, PHP 5, PHP 7) Cosine float cos ( float