How do I do make a random chance thing in php?

I'm trying to make an item gettable on BlockBreakEvent but I don't know how to set up chances, can anyone help?

 

use mt_rand on onBreakBlockEvent and dont forgot setDrop();

PHP:

mt_rand(1, 30) // 1 chance out of 30
mt_rand(1, 999) // 1 chance out of 999
mt_rand(10,100) // 10 chance out of 100

 

In your BlockBreakEvent method:

PHP:


$ch
/*
 * @var Player $player;
 */
$chance = 35; // chance in percentage
$random = round(mt_rand(1, (1 / $chance) * 100)); // round it to make an integer
if($random == 1) { // 35% chance to get a diamond (264)
    $drops = $event->getDrops();
    $drops[] = Item::get(264);
    $event->setDrops($drops);
}


If you want to give each item a specific percentage to drop:

PHP:

/*
 * @var Player $player;
 */
$items = ["357:0:8" => 50, "388:0:1" => 20, "399:0:1" => 20, "293:0:1" => 10]; // key = <ID>:<meta>:<amount>, value = percentage
// The sum of ALL values together needs to be 100
// Example: ""351:3:32" => 50" will be "32 Cocoa Beans => Drop chance 50%"

$random = mt_rand(0, 100);
$w = 0;
foreach($items as $id => $percentage) { // chooses a number
    $w += $percentage;
    if ($w > $random) {
        $data = explode(":", $id);
        $item = Item::get($data[0], $data[1], $data[2]);
        break;
    }
}

$drops = $event->getDrops();
$drops[] = $item;
$event->setDrops($drops); // drop the item


If you want 10% chance to drop an emerald and 15% to drop a diamond (the rest 65% will be nothing), just use:

PHP:

$items = ["388:0:1" => 10, "264:0:1" => 15, "0:0:0" => 65]; // 0 = air


 

Undefined $item

 

Its items

 

No $item

 

I think you might have defined the array in a way that the values counted together are not 100.

 

he closed the loops he only defined the $items array and not $item

 

would not do it like that anyway it's a bad way.
thank you for understanding me

 

it's exactly that what i said with another word.

 

Development section

 

I don't think you're helpful with that. Everyone knows that this is supposed to be there, and OP probably won't understand what you intend to communicate.

 

How do I use this but instead of blockbreak event it'll be everytime I touch the chest with a key and jt gives custom renamed ITems

 

Use interactevent; check if touching chest and item in hand is equal to key; and if it is give what you wanted to.