(PHP 4, PHP 5, PHP 7) Get value of pi float pi

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

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

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

(PHP 4 >= 4.2.0, PHP 5, PHP 7) Finds whether a value is infinite

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

(PHP 4 >= 4.1.0, PHP 5, PHP 7) Hyperbolic tangent

(PHP 4 >= 4.1.0, PHP 5, PHP 7) Hyperbolic sine

(PHP 4 >= 4.1.0, PHP 5, PHP 7) Returns exp(number) - 1, computed in a way that is accurate even when the