Schedule Deletion of Record

Question

Hello, how are you? All right?

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I’ll explain my situation and already show you what I have, come on:

So, I need to schedule the deletion of a data from SQL, I have a system that publishes polls, in this publication, I define a deletion DATE, I call expire, I have a class called Poll, that class that manages all information and collects relevant data from the polls.

My next step is to let this (deletion scheduling) work, but I have some rules for this, I don’t intend to use Mysql Events, I want to use PHP and Cronjob, the code I am TRYING to do is this:

public function sync()
{

    $sql = "DELETE FROM tb_poll WHERE active = 1 AND date < expiredate";
    $stmt = connection::prepare($sql);
    $stmt->execute();

}

in the class builder, I call this function as follows:

switch ($_GET['exec'])
{
    case 'dhgahjpJOPpHPhHvhKMoph':
        $this->sync();
        break;
        //restante do código

So I access it like this: ?page=poll&exec=dhgahjpJOPpHPhHvhKMoph

That being said, the error I get from the browser is Error 500.

localhost is currently unable to respond to this request. HTTP ERROR 500

I have already tested DELETE only by informing the output of the active field (which is already preset as '1'), however, I was not successful.

Note: the tables are related and the fields defined for Default: 0