prepend.php

<?php

use Google\Cloud\Logging\LoggingClient;
use Google\Cloud\ErrorReporting\Bootstrap;

$prev = set_exception_handler(function ($e) {
    if (!class_exists(LoggingClient::class) || !class_exists(Bootstrap::class)) {
        // autoload our own libraries
        require_once('/sys/cloud_logging_autoloader.php');
    }
    $logging = new LoggingClient();
    Bootstrap::$psrLogger = $logging->psrLogger();
    Bootstrap::exceptionHandler($e);
});