Updating outdated plugins:

PHP:

<?php

namespace Alias;

use pocketmine\command\Command;
use pocketmine\command\CommandSender;
use pocketmine\event\Listener;
use pocketmine\event\player\PlayerJoinEvent;
use pocketmine\Player;
use pocketmine\Iplayer;
use pocketmine\OfflinePlayer;
use pocketmine\plugin\PluginBase;
use pocketmine\utils\Config;

class MainClass extends PluginBase implements Listener{
   
    public function onEnable(){
        $this->getServer()->getPluginManager()->registerEvents($this, $this);
        if(!is_dir($this->getDataFolder()."players/lastip")){
            @mkdir($this->getDataFolder()."players/lastip", 0777, true);
        }
        if(!is_dir($this->getDataFolder()."players/ip")){
            @mkdir($this->getDataFolder()."players/ip", 0777, true);
        }
    }
    public function onDisable(){}
    public function onJoin(PlayerJoinEvent $event){
        $name = $event->getPlayer()->getDisplayName();
        $ip = $event->getPlayer()->getAddress();
        if(is_file($this->getDataFolder()."players/lastip/".$name[0]."/".$name.".yml")){
            unlink($this->getDataFolder()."players/lastip/".$name[0]."/".$name.".yml");
            $name = $event->getPlayer()->getDisplayName();
            $ip = $event->getPlayer()->getAddress();
            @mkdir($this->getDataFolder()."players/lastip/".$name[0]."", 0777, true);
            $lastip = new Config($this->getDataFolder()."players/lastip/".$name[0]."/".$name.".yml", CONFIG::YAML, array(
                "lastip" => "".$ip."",
            ));
            $lastip->save();
            @mkdir($this->getDataFolder()."players/ip/".$ip[0]."", 0777, true);
            $ipfile = new Config($this->getDataFolder()."players/ip/".$ip[0]."/".$ip.".txt", CONFIG::ENUM);
            $ipfile->set($name);
            $ipfile->save();
        }else{
            $name = $event->getPlayer()->getDisplayName();
            $ip = $event->getPlayer()->getAddress();
            @mkdir($this->getDataFolder()."players/lastip/".$name[0]."", 0777, true);
            $lastip = new Config($this->getDataFolder()."players/lastip/".$name[0]."/".$name.".yml", CONFIG::YAML, array(
                "lastip" => "".$ip."",
        ));
            $lastip->save();
            @mkdir($this->getDataFolder()."players/ip/".$ip[0]."", 0777, true);
            $ipfile = new Config($this->getDataFolder()."players/ip/".$ip[0]."/".$ip.".txt", CONFIG::ENUM);
            $ipfile->set($name);
            $ipfile->save();
        }
    }
    public function onCommand(CommandSender $sender, Command $command, $label, array $args){
        switch($command->getName()){
            case "alias":
                if(!isset($args[0])){
                    $sender->sendMessage("§7(§c!§7)§c Usage: ".$command->getUsage()."");
                    return true;
                }
                $name = strtolower($args[0]);
                $player = $this->getServer()->getPlayer($name);
                if($player instanceOf Player){
                    $ip = $player->getPlayer()->getAddress();
                    $file = new Config($this->getDataFolder()."players/ip/".$ip[0]."/".$ip.".txt");
                    $names = $file->getAll(true);
                    $names = implode(', ', $names);
                    $sender->sendMessage("§7(§a!§7)§a Showing alias of ".$name."...");
                    $sender->sendMessage("§7(§a!§7)§a ".$names."");
                    return true;
                }else{
                    if(!is_file($this->getDataFolder()."players/lastip/".$name[0]."/".$name.".yml")){
                        $sender->sendMessage("§7(§c!§7)§c Player does not exist!");
                        return true;
                    }else{
                        $lastip = new Config($this->getDataFolder()."players/lastip/".$name[0]."/".$name.".yml");
                        $ip = $lastip->get("lastip");
                        $file = new Config($this->getDataFolder()."players/ip/".$ip[0]."/".$ip.".txt");
                        $names = $file->getAll(true);
                        if($names == null){
                            $sender->sendMessage("§7(§c!§7)§c Player does not exist!");
                            break;
                        }else{
                            $names = implode(', ', $names);
                            $sender->sendMessage("§7(§a!§7)§a Showing alias of ".$name."...");
                            $sender->sendMessage("§7(§a!§7)§a ".$names."");
                            return true;
                        }
                    }
                }
                return true;
        }
    }
}



Couldn't contact the original owner of "Alias" plugin .-.

Can anyone teach me how to update outdated plugins

 

Kinda Simple, First go To plugin.yml and change the api version to [3.0.0].

DEBBUGING
I would reccomend to make a free server to have it like test enviroment. Start your server(make sure you have alias installed) and press CTRL+F (if on google chrome) and search alias, if u see like any error try going on forums (pmmp forums/stack overflow etc) and asking or resolving them by yourself.

 

Well, simply "updating" or injecting the API probably won't solve the problem which it didn't, as the plugin is not coded simply.
I should've added on that I wanted to know what parts of the code were wrong(doesn't go with the current PMMP)

 

Use PhpStorm to check for symbol changes (or a different ide whatever)

 

I did .-. and I tried fixing them but the plugin internal server errors. I'm just gonna leave it here for now. Thanks for your help!

 

Could you explain why Google Chrome is involved into this discussion?

 

Idk lol, its the most common browser.

 

What’s a browser got to do with updating a plugin