PHPNotifier - is a task scheduler. Allows you to schedule a task that will be executed at any time you wish.

add to your composer.json - "krydos/php-notifier": "*"

First of all you have to run a script that will be listening for new tasks and execute them when time came.

php ./vendor/bin/phpnotifier /absolute/path/to/db.file

or if you want to leave it working in background

nohup php ./vendor/bin/phpnotifier /absolute/path/to/db.file & >/dev/null 2>&1 &

Using nohup you can see log output in nohup.out file.

How to create new tasks:

use \PHPNotifier\PHPNotifier;

$scheduler = new PHPNotifier(PHPNotifier::FILE_METHOD, '/absolute/path/to/db.file');
$scheduler->scheduleTaskIn(10, 'echo', [
    'Hello world!'
    '>'
    'any_file'
]);  

This task will be executed in 10 seconds. Command that will be executed is echo Hello world! > any_file

Since sometimes you know exact time when you want to run a task and you don't want to calculate how many time is remaining there is another method exists - scheduleTaskAtTime with same signature.

use \PHPNotifier\PHPNotifier;

$scheduler = new PHPNotifier(PHPNotifier::FILE_METHOD, '/absolute/path/to/db.file');
$scheduler->scheduleTaskAtTime(1459382400, 'echo', [
    'Hello world!'
    '>'
    'any_file'
]);  

This method accepts unix timestamp as first argument. If you use DateTime PHP's object you can get this value by getTimestamp() method.

make sure that binary you're trying to execute is exists in your system

• support Redis as task store method
• support as many store methods as possible
• ability to accept DateTime as first argument for scheduleTaskAtTime method
• ability to accept any valid date string as first argument of scheduleTaskAtTime method
• ability to schedule repeatable tasks

There are no special rules. Just send a pull request or create an issue.