How I manage my cronjobs using deployer.org

deploy.php

<?php

/**
 * * * * * "command to be executed"
- - - - -
| | | | |
| | | | ----- Day of week (0 - 7) (Sunday=0 or 7)
| | | ------- Month (1 - 12)
| | --------- Day of month (1 - 31)
| ----------- Hour (0 - 23)
------------- Minute (0 - 59)
 */

//unique project key for crontab
set('cron_job_key', get('domain') . 'CRON_JOBS_FROM_DEPLOYMENT');
set('cron_jobs', function () {
    return [
        'prod' => [
            '* 12 * * * sudo -u www-data php ' . get('deploy_path') . '/current/web/console.php do:something', //every 12 hours
        ],
    ];
});

desc('Setup cronjobs');
task('deploy:cronjobs', function () {
    $stage = get('stage');
    $cronJobKey = getCronJobKey();
  
    //delete all cronjobs with unique key
    $resetCronJobsFromDeployment = sprintf('crontab -l | grep -v "%s" | crontab -', $cronJobKey);
    writeln('Resetting crontab list using key: ' . $cronJobKey);
    run($resetCronJobsFromDeployment);

    //add all cronjobs with unique key
    $cron_jobs = get('cron_jobs');
    $crons = [];
    writeln('Adding crons');
    if (isset($cron_jobs[$stage])) {
        foreach ($cron_jobs[$stage] as $cron_job) {
            $cron = sprintf('%s #%s', $cron_job, $cronJobKey);
            $add = '(crontab -l ; echo "' . $cron . '") | crontab -';
            run($add);
        }
    }
});