How to run a Curl script file at specific time just once in Laravel?

You can use the Laravel scheduler for this.

https://laravel.com/docs/7.x/scheduling

->cron('* * * * *')->timezone('America/New_York');

The equicalent linux command would be something like:

0 0 30 10 ? 2020  /command

thanks. I met this answer a lot when google about it but cron is repeat the job at that time and also do not support second. I want to start the job for example at 2020-08-30 12:20:20 second and never repeat that again.

This package supports seconds

https://github.com/spatie/laravel-short-schedule

Just have a table that keeps track of what to run and when. If time matches, run the task and set it as completed

Thanks for your answer. Maybe i demonstrate my question in bad way. I just want to run my job once and do not want to repeat it. I want to start the job (execute my php curl script) for example at 2020-08-30 12:20:20 and never repeat that again. As i understand this library repeat the job. That's not i am looking for.

have a jobs table

put the job in the table, with the exact time it should run

Have a scheduled task that checks the table once per minute. It collects any jobs that should be run in that minute.

If it finds any, it sleeps for the number of seconds remaining until the correct time.

The CURL task is then performed and the job removed from the database.

@snapey Thank u. You always have Engineered answer for me over years. i have a table that collects user tasks. It has a column with the time that related task should be run. for Example it is 2020-08-30 12:20:20. So I think i should Have a scheduled task that checks the table once per Second. The table is not that big so the query time is not so much trouble. I did not buy your sentence "If it finds any, it sleeps for the number of seconds remaining until the correct time". Could you walk me through it?

// find jobs that should start in the next minute
$jobs = Job::whereBetween('runtime',[now(),now()+addMinutes(1)])->orderBy('runtime')->get();

if(!$jobs) {
    return;        //nothing to do
}

foreach($jobs as $job) {

	sleep($job->runtime-now());	// sleep for the difference between now and the runtime

	// continue and perform curl task

}

There are some problems with this however. If more than one job can run per minute then you may be executing one at the time that a second should be executed. I don't know if you can guard for this. I mitigated this slightly by ordering the jobs in time order, however the Curl could take quite a few seconds to execute.

I am just exec a PHP curl file (which is out of Laravel Scope) per task and i think the job does not have to wait for the curl operation So that would be OK. Let me write my code and be in touch before closing the thread.