<?php
class Fish {}
class Mammal {}
class Whale extends Mammal {}
class Human extends Mammal {}
class Shark extends Fish {}
function anyFish(array $collection)
{
foreach ($collection as $item)
{
if((is_array($item) && anyFish($item)) || $item instanceof Fish)
{
return true;
}
}
return false;
}
$solar_system = [
'mars' => [
'dirt' => [new Human]
],
'earth' => [
'pacific' => [new Whale, new Whale, new Whale],
'atlantic' => [new Human]
]
];
$seas = [
'pacific' => [new Whale, new Whale, new Shark, new Whale],
'atlantic' => [new Human, new Shark]
];
$pub = [new Human, new Human];
var_dump(anyFish($solar_system));
var_dump(anyFish($seas));
var_dump(anyFish($pub));
preferences:
56.63 ms | 402 KiB | 5 Q