PHP - Call javascript from server side

Question

Is there anyway to run / trigger / call a javascript (client side) from server side (PHP) ?

I can run the javascript if i call it from browser (of course, because it's client), but not from server side / postman (i wonder if there's any?)

function validate_answer($p) {
?>

<script>
    $.ajax({ url: '/validate_time.php',
     data: {'action': 'test'},
     type: 'post',
     timeout:5000
    });
</script>

<?php

}

The reason i want to use this way, because in PHP, there's no such function like setTimeout like javascript does.

Thanks guys

EDIT

Okay, here's the thing. I'm creating a game that has a timeout, whenever the game starts, it will have a timelimit (10 mins example). And i need a function to do that, unfortunately, it's not accessible via browser (it's like a web service). I've tried using sleep, but it's not what i wanted.

hi @u_mulder, as i said above, i need it because in php there's no such thing like settimeout (javascript). Sleep isnt the same like settimeout. it will not execute other stuff until it wake up. — Webster
– Webster, Commented Nov 8, 2016 at 8:28
Try to check GearmanWorker::setTimeout function. This may help you. Here is the link php.net/manual/en/gearmanworker.settimeout.php — Manish
– Manish, Commented Nov 8, 2016 at 8:33

Rolf Pedro Ernst · Accepted Answer · 2016-11-08 08:32:42Z

2

You cannot run javascript on the server side. If you want to get the effect of the timeout without holding up your main script, you can call the URL with a parameter like this:

function validate_answer($p) {

    $ms_delay = 5000;

    file_get_contents('http://www.yoursite.com/validate_time.php?action=test&delay='.$ms_delay)

}

And then in validate_time.php at the start of the file do this:

sleep($_GET['delay'] / 1000)

Not very elegant though.

answered Nov 8, 2016 at 8:32

Rolf Pedro Ernst

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Comments

Manish · Accepted Answer · 2016-11-08 08:35:53Z

1

PHP is single-threaded, and in general PHP is focused on the HTTP request cycle, so this would be tricky to allow a timeout to run code, potentially after the request is done.

I can suggest you look into Gearman as a solution to delegate work to other PHP processes.

answered Nov 8, 2016 at 8:35

Manish

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1 Comment

Webster Over a year ago

Hi, i will try it, and will update the result. thanks :)

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