Fiber::isRunning

(PHP 8 >= 8.1.0)

Fiber::isRunning — 确认 fiber 是否正在运行

说明

public Fiber::isRunning(): bool

参数

此函数没有参数。

返回值

仅在 fiber 运行时返回 true。在调用 Fiber::start()、Fiber::resume()、 Fiber::throw() 还没有返回之后，将认为 fiber 正在运行。如果 fiber 没有运行则返回 false。

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booleantype1990 at gmail dot com ¶

2 days ago

Fiber::isRunning() will only return true if you call it from within a Fiber while it is running.

<?php
$fiber = new Fiber(function ($fiber) {
    echo "Inside Fiber. isRunning: ";
    var_dump($fiber->isRunning()); // Here is true

    Fiber::suspend();

    echo "Inside Fiber again after resume(). isRunning: ";
    var_dump($fiber->isRunning()); // true again
});

echo "Before Fiber launch. isRunning: ";
var_dump($fiber->isRunning()); // Here is false

$fiber->start($fiber);

echo "After suspend. isRunning: ";
var_dump($fiber->isRunning()); // Here is false

$fiber->resume();

echo "After resume. isRunning: ";
var_dump($fiber->isRunning()); // Here is false
?>

Result:
Before Fiber launch. isRunning: bool(false)
Inside Fiber. isRunning: bool(true)
After suspend. isRunning: bool(false)
Inside Fiber again after resume(). isRunning: bool(true)
After resume. isRunning: bool(false)