Is there a version of PSWebServiceLibrary.php running with PHP v7.0? - php

Question

I have site A that runs on Prestashop 1.6.1.5 and to retrieve data on another site (site B) which also runs under Prestashop 1.6.1.5, I use a module "homemade" (by my predecessor) which uses, among other things, PSWebServiceLibrary.php.
When I change version of PHP (from version 5.6 to version 7.0) on site B and I want to use the module on site A, I have some errors including PSWebServiceLibrary.php
I thus have the following error message:
Fatal error: Uncaught exception 'PrestaShopWebserviceException' with message
'This call to PrestaShop Web Services failed and returned an HTTP status of 500. That means: Internal Server Error.' in www.ndd.fr/PSWebServiceLibrary.php:95
Stack trace:
0 www.ndd.fr/PSWebServiceLibrary.php(297): PrestaShopWebservice->checkStatusCode(500)
1 www.ndd.fr/modules/orderlist/classes/orderArrayCreator.class.php(145): PrestaShopWebservice->get(Array)
2 www.ndd.fr/modules/orderlist/controllers/admin/AdminOrderList.php(125): orderArrayCreator->createDistantOrderArray()
3 www.ndd.fr/classes/controller/Controller.php(178): AdminOrderListController->postProcess()
4 www.ndd.fr/override/classes/Dispatcher.php(335): ControllerCore->run()
5 www.ndd.fr/override/classes/Dispatcher.php(107): Dispatcher->dispatch_16()
6 www.ndd.fr/admin/index.php(58): Dispatcher->dispatch()
7 {main} thrown in www.ndd.fr/PSWebServiceLibrary.php on line 95
If I come back to version 5.6, I have no problem, the module works normally.
So this is a problem related to version 7 of PHP.
Is there a version of PSWebServiceLibrary.php that works with PHP v 7.0?
In advance thank you for your help because I am a beginner in PHP

Answer 1

Indeed PrestaShop 1.6.1.5 is not officially PHP 7.x compatible, however, you should be able to fix this error easily:
Edit the file /classes/webservice/WebserviceRequest.php and on line 794 replace:
if (count(self::$shopIDs)) {
by
if (is_array(self::$shopIDs) && count(self::$shopIDs)) {
Download the latest version of PSWebServiceLibrary.php (here)
To make sure everything's now ok, create a new file test-ws.php with the following code (and type in your url/credentials) :
<?php
require_once('./PSWebServiceLibrary.php');
try
{
$ws = new PrestaShopWebservice('http://www.yourstore.com', 'YOURWSKEYHERE', false);
echo '<pre>';
print_r($ws);
}
catch (PrestaShopWebserviceException $ex)
{
echo 'Error : '.$ex->getMessage();
}
?>
If it works you should get something like:
PrestaShopWebservice Object
(
[url:protected] => http://www.yourstore.com
[key:protected] => YOURWSKEYHERE
[debug:protected] =>
[version:protected] => unknown
)
In case you still get a 500 error after that: Turn on error_logs in your php.ini configuration file and check the errors logs. Alternately, you can try to set _PS_MODE_DEV_ to true in /config/defines.inc.php.