Make player set a position

Hello Guys, im developing a Plugin but, i need a position set and then get the area set, how can i do that? please, help, its urgent i have tried it, but i can't find out how to do it! PLEASE!!!

public function onCommand(\pocketmine\command\CommandSender $sender, \pocketmine\command\Command $command, $label, array $args) {
$name = $player->getDisplayName();
if($name == D4nl0g){
switch (strtolower($command->getUsage())){
case 'setpos1':
$this->
}

Thats my code so far

Hi
1. $name will not be defined cuz it will crash on that part!

PHP:

// You used
$player
// instead of
$sender


2. Why you use $player->getDisplayName()? use $player->getName();
3. switch($command->getName()); Not ->getUsage();
4. :

PHP:

$this->positions = array();

public function onCommand(...){
switch(...){
case "setpos1":
$this->positions[$sender->getName()]['pos1'] = $sender->getPosition();
$sender->sendMessage('First position set to: '.$sender->getFloorX().":".$sender->getFloorY().":".$sender->getFloorZ().".");
return true;
}
}


5. Use

PHP:

So we could read code easier!

On switch i need to put

Code:

switch (strtolower($command->getName())) {

?

Please learn PHP and the PocketMine API.

I want, but i can't find where to study it, all youtube videos suck

The learn it on internet. Not videos. Here are the docs: http://jenkins.pocketmine.net/job/PocketMine-MP-doc/doxygen/index.html

Please learn PHP. You lack knowledge even in the most fundamental parts of PHP.

No, i know PHP, i made plugins, but only arguments with $sender and broadcastmessage and things like that

That isn't PHP. Those are only parts of how to make a plugin, but that isn't even coding because you don't even what they mean.
If you so, you would spot the lack of quotes in the very first case.