src/cli/Command.php
public function actionExec($id, $ttr, $attempt, $pid)
    {
        if ($this->queue->execute($id, file_get_contents('php://stdin'), $ttr, $attempt, $pid ?: null)) {
            return self::EXEC_DONE;
        }
        return self::EXEC_RETRY;
    }
public function actionExec($id, $ttr, $attempt, $pid)
    {
        if ($this->queue->execute($id, file_get_contents('php://stdin'), $ttr, $attempt, $pid ?: null)) {
            return self::EXEC_DONE;
        }
        return self::EXEC_RETRY;
    }
Executes a job.
The command is internal, and used to isolate a job execution. Manual usage is not provided.

@param string|null $id of a message
@param int $ttr time to reserve
@param int $attempt number
@param int $pid of a worker
@return int exit code
@internal It is used with isolate mode.