First line of Sign

How can I check if the first line of a sign is "buy"?

 

The Sign is A tile so make a little search in pmmp files and you can see
https://github.com/pmmp/PocketMine-MP/blob/master/src/pocketmine/tile/Sign.php#L120-L125

PHP:

//Check if the block is an instanceof Sign
$tile = $player->getLevel()->getTile($block);
if($tile instanceof Sign){
//$text is an array of wht is written in the sign
$text= $tile->getText();
//$line1 contain what is written in the first line of a sign
$line1= $tile->getLine(0)
if($line1== "[BUY]"){
#Your code

 

$block = ?

 

Depends of what event are you using....
$block is a block.......
If you want to know what is block i think you did not try to search how to get the block
In interact Event its $event->getBlock()

 

The code not Working i dont become a error but its not working

 

Send the code...
And i just gived you an idea i didnt gave you the code

 

public function onInteract(PlayerInteractEvent $event){
$block = $event->getBlock();
$player = $event->getPlayer();
$tile = $player->getLevel()->getTile($block);

if($tile instanceof Sign){
$text = $tile->getText();
$line1 = $tile->getLine(0);
if($line1 == "[Buy]") {
$player->sendMessage("Dont hit this Sign!");
}
}
}
}

 

If you dont know there are "[PHP ]"
And Send the code entirelly maybe you didt register the Event
Or Your "Sign" is an instance of blocks(pocketmine/block/Sign) not an instance of pocketmine/tile/Sign

 

Also i must import use pocketmine\tile\Sign; ?

 

Yes just that not the block class