Online PHP editor | output for H1T04

@ 2021-09-14T13:57:32Z

<?php

abstract class A {
    public function foo() {
        // $this refers to $b/B regardless of the fact that the code is in A::foo
        $this->bar();
    }
    public function bar() {
        echo "A's bar";
    }
}

class B extends A {
    public function foo() {
        parent::foo();
    }
    public function bar() {
        echo "B's bar";
    }
}

$b = new B();
$b->foo();

Output for 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.4, 8.3.6 - 8.3.25, 8.4.1 - 8.4.12: B's bar
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 B's bar

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