Please help me

public function onBreak(BlockBreakEvent $event) {
$island = $this->plugin->getIslandManager()->getOnlineIsland($event->getPlayer()->getLevel()->getName());
if($island instanceof Island) {
if(!$event->getPlayer()->isOp() and !in_array(strtolower($event->getPlayer()->getName()), $island->getAllMembers())) {
$event->getPlayer()->sendPopup(TextFormat::RED . "You must be part of this island to break here!");
$event->setCancelled();
}
else {
if($event->getBlock()->getId() == Block::COBBLESTONE) {

- Please help me write code that when players block the block will drop random item ...

 

Pleeeease use code blocks...

Spoiler: What's that?

Please use:
[PHP]Put your php code here[/PHP]

or for normal code or files that aren't php:

[CODE]Put normal code or file content (e.g. configs) here[/CODE]

 

PHP:

if($event->getBlock()->getId() === 14) {
    $drops = array();
    $drops[] = new Item(<blockID>, 0, <amount>);
    $event->setDrops($drops);
}


 

thank )

 

If you want it to drop a random block/item:

PHP:

if($event->getBlock()->getId() === 14) {
    $random = mt_rand(1,435);
    $drops = array();
    $drops[] = new Item($random, 0, <amount>);
    $event->setDrops($drops);
}

 

At my code for SkyBlock Plugin, Well
For example: Can lava + water create random blocks?

 

This is the wrong section for development questions.
To answer your question however, yes, lava and water can create set blocks.