Yii Framework

$process = new Process(['php', 'yii','test/send-sms-all-user']);
try {
$process->run();
}
catch (ProcessFailedException $exception){
echo $exception;
}

Error : "The Process class relies on proc_open, which is not available on your PHP installation."
I use vendor\\symfony\\process\\Process library in Yii2 for background process. It work in localhost, but it does not work in server.