带有Laravel 5.3的JasperPHP输出文件未保存在磁盘中

Question

我正在使用这样的代码

use JasperPHP\JasperPHP as JasperPHP;
$jasper = new JasperPHP;
// Process a Jasper file to PDF and RTF (you can use directly the .jrxml)
 $database = Config::get('database.connections.mysql');
 $output = public_path() . '/report/'.time().'_codelution';
 $file = base_path() .'/storage/reporting/hrm_plan_formation.pdf';
 $ext = "pdf";

$bb = $jasper->process(
    __DIR__ . '/../../vendor/cossou/jasperphp/examples/hello_world.jasper',
    $output,
    array("pdf", "rtf"),
    array("php_version" => "7.2")
)->output();

的print_r（$ BB）;

输出显示如下：

C：^^^ \ XAMPP ^^^ \ htdocs中^^^ \站点^^^ \ laravel53 ^^^ \厂商^^^ \ cossou ^^^ \ jasperphp ^^^ \ SRC ^^^ \ JasperPHP /../JasperStarter/bin/jasperstarter进程C：^^^ \ xampp ^^^ \ htdocs ^^^ \ Sites ^^^ \ laravel53 ^^^ \ routes /../../ vendor / cossou / jasperphp / examples / hello_world.jasper -o C：^^^ \ xampp ^^^ \ htdocs ^^^ \ Sites ^^^ \ laravel53 ^^^ \ public / report / 1479887883_codelution -f pdf rtf -r C：^^^ \ XAMPP ^^^ \ htdocs中^^^ \站点^^^ \ laravel53 ^^^ \厂商^^^ \ cossou ^^^ \ jasperphp ^^^ \ SRC ^^^ \ jasperPHP /../../ .. /../../ -P php_version = 7.2

但文件未保存在磁盘中。