Scope::isClosed

(PHP 8.6+, True Async 1.0)

public function isClosed(): bool

Checks whether the scope is closed. A scope is considered closed after a call to dispose() or disposeSafely(). New coroutines cannot be added to a closed scope.

Return Value

bool — true if the scope is closed, false otherwise.

Examples

Example #1 Checking scope state

<?php

use Async\Scope;

$scope = new Scope();

var_dump($scope->isClosed()); // bool(false)

$scope->dispose();

var_dump($scope->isClosed()); // bool(true)

Example #2 Guarding against adding to a closed scope

<?php

use Async\Scope;

$scope = new Scope();
$scope->dispose();

if (!$scope->isClosed()) {
    $scope->spawn(function() {
        echo "This coroutine will not be created\n";
    });
} else {
    echo "Scope is already closed\n";
}

See Also

• Scope::isFinished — Check if the scope is finished
• Scope::isCancelled — Check if the scope is cancelled
• Scope::dispose — Close the scope