SystemFacade.php

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<?php
namespace Whoops\Util;

class SystemFacade
{
    public function startOutputBuffering()
    {
        return ob_start();
    }

    public function setErrorHandler(callable $handler, $types = 'use-php-defaults')
    {
        // Workaround for PHP 5.5
        if ($types === 'use-php-defaults') {
            $types = E_ALL | E_STRICT;
        }
        return set_error_handler($handler, $types);
    }

    public function setExceptionHandler(callable $handler)
    {
        return set_exception_handler($handler);
    }

    public function restoreExceptionHandler()
    {
        restore_exception_handler();
    }

    public function restoreErrorHandler()
    {
        restore_error_handler();
    }

    public function registerShutdownFunction(callable $function)
    {
        register_shutdown_function($function);
    }

    public function cleanOutputBuffer()
    {
        return ob_get_clean();
    }

    public function getOutputBufferLevel()
    {
        return ob_get_level();
    }

    public function endOutputBuffering()
    {
        return ob_end_clean();
    }

    public function flushOutputBuffer()
    {
        flush();
    }

    public function getErrorReportingLevel()
    {
        return error_reporting();
    }

    public function getLastError()
    {
        return error_get_last();
    }

    public function setHttpResponseCode($httpCode)
    {
        return http_response_code($httpCode);
    }

    public function stopExecution($exitStatus)
    {
        exit($exitStatus);
    }
}