How to make a PHP function triggered automatically at a user defined time

I am developing an internal system for a company with PHP using Zend framework. I need one of its functions to execute on a time specified by user.

How to run any cronjobs using Objective-C at iOS Platform

Is there any way to run schedulers / schedule programs for example Cron Jobs using Objective-C at iOS Platform?

Cron expression to run every friday starting from fixed date

I want to create a cron expression to run every friday starting from 25th October at 01:00 AM. Here is the expression I came up with but it is giving error. Kindly help.

Create and delay task for 24 hours [closed]

Closed 10 years ago.

Create and delay task for 24 hours [closed]

Closed 10 years ago.

Create and delay task for 24 hours [closed]

Closed 10 years ago.

Create and delay task for 24 hours [closed]

Closed 10 years ago.

Create and delay task for 24 hours [closed]

Closed 10 years ago.

Run every other day, regardless of day of week or month

I want to create a cron expression that runs every other day. I don’t care if the day of month is odd or even, I don’t care what day of the week it is. I want it to run, then wait 2 days and run again.

Cron: run every other day, regardless of day of week or month

I want to create a cron expression that runs every other day, end of story. I don’t care if the day of month is odd or even, I don’t care what day of the week it is. I want it to run, then wait 2 days and run again.