# Fiber::isRunning

(PHP 8 >= 8.1.0)

Fiber::isRunning — Determines if the fiber is running

### Descripción

public Fiber::isRunning(): bool

### Parámetros

Esta función no tiene parámetros.

### Valores devueltos

Returns `true` only if the fiber is running. A fiber is considered running after a call to Fiber::start(), Fiber::resume(), or Fiber::throw() that has not yet returned. Return `false` if the fiber is not running.