is_callable

reactphp/promise

Supported Versions: PHP 4 >= 4.0.6, PHP 5, PHP 7, PHP 8

Verify that a value can be called as a function from the current scope.

        <?php is_callable(mixed $value, bool $syntax_only = false, string &$callable_name = null): bool
    

<?php     {

        $this->cancelCalled = true;



        if (is_callable($this->onCancel)) {

            ($this->onCancel)();

        }

    }

tests/fixtures/SimpleTestCancellableThenable.php

<?php         $adapter->promise()->cancel();



        self::assertCount(2, $args);

        self::assertTrue(is_callable($args[0]));

        self::assertTrue(is_callable($args[1]));

    }

tests/PromiseTest/CancelTestTrait.php

<?php         self::assertCount(2, $args);

        self::assertTrue(is_callable($args[0]));

        self::assertTrue(is_callable($args[1]));

    }

tests/PromiseTest/CancelTestTrait.php