Math
PHP Manual

is_infinite

(PHP 4 >= 4.2.0, PHP 5)

is_infinite — Finds whether a value is infinite

Описание

bool is_infinite ( float $val )

Returns TRUE if val is infinite (positive or negative), like the result of log(0) or any value too big to fit into a float on this platform.

Список параметров

val

The value to check

Возвращаемые значения

TRUE if val is infinite, else FALSE.

Смотрите также


Math
PHP Manual