Online PHP editor | output for Fevli

@ 2020-02-28T15:34:20Z

<?php

class Foo
{
    public $bar = 1;
    
    public function bar(?int $bar = null): Foo
    {
        $this->bar = $bar ?? $this->bar;
        
        return $this;
    }
    
    public function copy(?int $bar = null): Foo
    {
        return $this->fork()->bar($bar ?? $this->bar);
    }
    
    public function fork(): Foo
    {
        return clone $this;
    }
}

$a = new foo();
$a2 = $a->copy();
$b = $a->copy(2);
$b2 = $a->copy();
$c = $b->copy(3);
$c2 = $b->copy();

var_dump(
    $a->bar,
    $a2->bar,
    $b->bar,
    $b2->bar,
    $c->bar,
    $c2->bar
);

Output for 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.4, 8.3.6 - 8.3.7: int(1) int(1) int(2) int(1) int(3) int(2)
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 int(1) int(1) int(2) int(1) int(3) int(2)

preferences:dark modelive preview