<?php
class myClass {
private $var = null;
function __construct() {
$this->var = "Hello";
}
public function func()
{
$this->var = null;
var_dump($this->var);// Does nothing, still "Hello"
unset($this->var);
var_dump($this->var);// Does nothing, still "Hello"
$this->var = false;
var_dump($this->var);// Works and prints "Hello"
}
}
$c = new myClass;
$c->func();
NULL
Warning: Undefined property: myClass::$var in /in/POdHF on line 15
NULL
bool(false)
Output for 8.3.5
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
Warning: Undefined property: myClass::$var in /in/POdHF on line 15
NULL
bool(false)