<?php
class Animal{
protected $isAlive;
public function __construct(){
$this->isAlive = true;
}
public function isAlive(){
return $this->isAlive;
}
}
class Cat extends Animal{
public function __construct(){
//we forgot something...
}
}
$cat = new Cat();
var_dump($cat->isAlive());
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0
NULL