I have a webapp that is supposed to run a resource-intensive task (function) that will take time to complete. I'm triggering this task by calling a url;

```html
http://app.domain.com/process_file/@fileid

```

However, as expected, the web client waits for the task (function) to complete. This is likely to cause time outs. 

Please suggest ways i can trigger the task and let the user continue navigating the webapp.

I have tried the following so far;

```
1. JQuery/ajax
2. Redirecting to a _blank page 

```

NB: I have no access to the crontab or Scheduler. I'm using PHP, JavaScript & fat-free framework