如何在BlueMix Cloud服务器中执行PHP Cron作业?

I want to run Cron job in BlueMix in my php web application and I not found directly any Cron concept in bluemix. So how can I perform my cron task?

In many tutorial they say workload scheduler service but this is in java and I don't understand this concept and no good tutorial about this.

For scripts that need to be called on a schedule, invoke them over HTTP from a cron job using curl or wget from a Linux host, often the one hosting the LAMP stack itself.

However, that doesn't work on a PaaS like Bluemix because you don't have shell access to any underlying VM, so the alternative is to install a cron job elsewhere on a server under your control and script it to hit your Bluemix script on a schedule.