(PHP 4, PHP 5, PHP 7) Sine float sin ( float

(PHP 4 >= 4.1.0, PHP 5, PHP 7) Calculate the length of the hypotenuse of a right-angle triangle

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

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

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

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

(PHP 4, PHP 5, PHP 7) Generate a better random value

(PHP 4, PHP 5, PHP 7) Decimal to binary string

(PHP 4, PHP 5, PHP 7) Show largest possible random value

(PHP 4 >= 4.2.0, PHP 5, PHP 7) Finds whether a value is not a number