Solved Sign Replace

I needa code for a sign that when I put {aaa} on it it runs the code...

THIS IS NOT CORRECT CODE OR WAT THIS IS EXAMPLE FOR U TO UNDERSTAND, IM TELLING THIS TO U PEMAP IF UR READIN THIS

$loul = sign(getText"{aaa}");

$loul = the code

also please add the code from public function

If u place a sign with the Text {aaa} if runs a command?

It runs what code and when? Please explain.

in sign when you enter {aaa} on it it runs the code, so example we got the code getting online players in world

if you did this to sign

LINE1: Hub
LINE2: <players on>
LINE3: {aaa}
LINE4: null

and when you enter

LINE1: Hub
LINE2: <Players on>
LINE3: 1
LINE4: null

You've made a million(exaggeration(or not?)) threads asking for help, maybe you should really spend a good few weeks/months studying proper PHP and proper PocketMine API?

Use SignChangeEvent::getLine($index)

This is how I learn you cant (controll(or ask)) waht should I do because every people has different types

PHP:

public function SignChange(SignChangeEvent $e){
$l = $e->getLines();
        $l = implode(" ", $l);
        $server = $this->getServer();
        $l = str_replace("{aaa}", count($server->getOnlinePlayers()), TextFormat::clean($l));
        $line = 3;//line you want (0=Line 1, 1=Line 2, 2=Line 3, 3=Line 4);
        $e->setLine($line, $l);
}

thank you! so much! I like a people like you, keep being like that

Your welcome, but you should still try to learn PHP, it will be so easy to do it yourself, trust me.

Im trying to learn on code academy while wwtching someone

its hard for me to learn in php.net so atm I use to copy and mix and remember the codes ive seen in my eyes thats why I've been asking alot for different codes because I can use them for different purposes like this one

still didnt work it doesnt update the sign maybe?

Example

PHP:

public function onSign(SignChangeEvent $event){
    $sign = $event->getLines(); // getLines() will return an array of lines
    if($sign[0] == '[example]'){ // Check if the first line is [example]
        $event->setLine(0, 'Hub'); // Change the first line
        $event->setLine(1, 'test'); // Change the second line
    }
}

maybe use setText instead if setLine on last? idk

I never said I could/would/want to control how you learn, everyone has their own learning styles. It was a simple suggestion, and, if you can't take a suggestion, how the heck are you going to develop good plugins?

To truly help people, rather than just posting the code, also post explanation.