gmail-filter-builder/bin/generate-filters

#!/usr/bin/env php
<?php

use Opdavies\GmailFilterBuilder\Builder;

if (file_exists(__DIR__.'/../../../../filters.php')) {
    $filters = require(__DIR__.'/../../../../filters.php');
} elseif (file_exists(__DIR__.'/../filters.php')) {
    $filters = require(__DIR__.'/../filters.php');
} else {
    throw new \Exception('No filters.php file found.');
}

echo new Builder($filters);