Remove particle

How remove floating text particle ?

I have done:

PHP:

$this->particle = new FloatingTextParticle(new Vector3($x, $y, $z), " ", "");
$p->getLevel()->addParticle($this->particle);

// ...............
$this->particle->setInvisible(true);
$p->getLevel()->addParticle($this->particle);

But what if I have multiple FTPs?

Then how do I know which particle you are trying to remove?

FTP = file transfer protocol

@PEMapModder, that is exactly what I am asking .
And @Gamecrafter, you know better that I mean FloatingTextParticle

Just don't pick on those tiny things and start flame wars, OK? You understand what he means, and FTP can mean many things other than FileTransferProtocol.

@Legoboy0215 so you don't even know what you are trying to do? Before you post a question, please make sure you know what you are trying to do.

I am trying to remove a FTP (*Lazy me*) from a bunch of them in a world.
For example, I have 20 FTPs in a world and I want to delete the one that has a specific vector.

Store the FTPs in an array with Level::blockHash() as the key.

You don't know what sarcasm is, do you?

You don't know him, do you?
Sarcasm and sense of humor is what he lacks (No Offense)

You know him better than I do! I didn't know that!

Sarcasm...

PHP:

public static function blockHash($x, $y, $z){
    return PHP_INT_SIZE === 8 ? (($x & 0xFFFFFFF) << 35) | (($y &    0x7f) << 28) | ($z & 0xFFFFFFF) : $x . ":" . $y .":". $z;
}

What does this do? Hash the block?

spam....

Trying to be a smart mouth?

Just shut up and do something constructive, OK?

It returns a unique identifier that represents an XYZ match (i.e. a Vector3, although you aren't passing that object). For 64 bit systems, it returns an integer that combines the coords. For 32 bit systems, it returns a string that combines the coords. A notable advantage is that you can get the coords back from the hash.

It basically gives a much better performance on 64 bit systems when you try to store values with coords as the key.

Confused....
Wait. It returns x:y:z like this?

Echo it out and see.

On 32-bit systems, it returns "1:2:3" for (1, 2, 3)
On 64-bit systems, it returns X×2^35+Y×2^28+Z.