Can PHP Do Async? Oh Yes, It Can!

PHP might seem like the kid of the programming world who says, “Why run when I can walk one step at a time?” But async is PHP attempting to drink an entire Red Bull 🤪 to handle multiple tasks at once.

So here’s an exciting look into how async is possible with PHP, from simple commands to cutting-edge fibers.

PHP CAN BE BADASS TOO

Good Ol’ Exec()

exec() is PHP’s age-old trick for handling async tasks by calling an external process. It’s like shouting, “Go handle this!” and running off to your next task.

Example:

exec("php send_email.php > /dev/null &");

This works but has its quirks, like ensuring those background tasks don’t trip over each other. Imagine juggling flaming torches while blindfolded. Yep, just like that.

Step 2: Forking — PHP Goes Matrix

Ever watched The Matrix? pcntl_fork() clones your running process into a parent and child. The parent can delegate and let the child finish off work independently. It’s cool but can leave you debugging like Neo dodging bullets.

$pid = pcntl_fork(); 
if ($pid == 0) { 
    // Child process
    echo "Handling child process"; 
    exit; 
}

CLI-only though, so don’t try this in your localhost web app.

Step 3: Fibers (PHP’s 8.1+ Game-Changer)

Fibers are like PHP’s “hold my latte” moment. They allow pausing midway (like a Netflix show binge interrupted by snacks), working on something else, and resuming when ready.

$fiber = new Fiber(function (): void {
    $value = Fiber::suspend("Paused here...");
    echo "Resumed with: $value\n";
});
$fiber->start();
$fiber->resume("Back in action!");

This involves less tearing out your hair while debugging—always a win.

(Rare footage of php’s fibers working)

Best Asynchronous Choices

Heads-up: Picking the right async solution depends on your app’s needs. Here’s a quick rundown:

Exec(): Quick and dirty for processes. Just watch system resources.
Pcntl_fork(): For CLI warriors splitting processes like Greek hydras.
Fibers: PHP 8.1+ flex; async made breezy.
Libraries & Frameworks: Check out ReactPHP and AMPHP.
Swoole: For when you want to go turbo mode with async web servers.

Want More Info?

Dive deeper with:

PHP is showing off its async chops, and it’s been a blast sharing it with you. What async tricks do you use in PHP? Let’s chat below!

Yep, let’s discuss more about php…

Who knows, maybe sdf’s new version would support async programming?
– foreshadowing –

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