Online PHP editor | output for fNHMA

@ 2015-09-10T21:50:49Z

<?php

class SomethingBuilder
{
    private $name;
    private $super;

    function __construct($name){
        $this->name = $name;
    }

    function setSuper($super){
        $this->super = $super;
    }

    function getSuper(){
        return $this->super;
    }
    
    function copy($whatToCopy = null, $copyOfwhatToCopy = null){
        if($this !== $whatToCopy){
            $copy = new SomethingBuilder($this->name);
            if($this->super)
                $copy->setSuper($this->super->copy(
                    $whatToCopy ?? $this,
                    $copyOfwhatToCopy ?? $copy
                ));
            return $copy;
        }else{
            return $copyOfwhatToCopy;
        }
    }
}

echo "No circular dependency:\n";
$a = new SomethingBuilder("A");
$b = new SomethingBuilder("B");
$a->setSuper($b);
echo "ORIGINAL:\n";
var_dump($a);
echo "COPY:\n";
var_dump($a->copy());

echo "\n----------\n\n";

echo "Self circular dependency:\n";
$a = new SomethingBuilder("A");
$a->setSuper($a);
echo "ORIGINAL:\n";
var_dump($a);
echo "COPY:\n";
var_dump($a->copy());

echo "\n----------\n\n";

echo "Two items circular dependency:\n";
$a = new SomethingBuilder("A");
$b = new SomethingBuilder("B");
$b->setSuper($a);
$a->setSuper($b);
echo "ORIGINAL:\n";
var_dump($a);
echo "COPY:\n";
var_dump($a->copy());

echo "\n----------\n\n";

echo "Three items circular dependency:\n";
$a = new SomethingBuilder("A");
$b = new SomethingBuilder("B");
$c = new SomethingBuilder("C");
$a->setSuper($c);
$b->setSuper($a);
$c->setSuper($b);

echo "ORIGINAL:\n";
var_dump($a);
echo "COPY:\n";
var_dump($a->copy());

eol versions

Output for 7.0.0 - 7.2.6: No circular dependency: ORIGINAL: object(SomethingBuilder)#1 (2) { ["name":"SomethingBuilder":private]=> string(1) "A" ["super":"SomethingBuilder":private]=> object(SomethingBuilder)#2 (2) { ["name":"SomethingBuilder":private]=> string(1) "B" ["super":"SomethingBuilder":private]=> NULL } } COPY: object(SomethingBuilder)#3 (2) { ["name":"SomethingBuilder":private]=> string(1) "A" ["super":"SomethingBuilder":private]=> object(SomethingBuilder)#4 (2) { ["name":"SomethingBuilder":private]=> string(1) "B" ["super":"SomethingBuilder":private]=> NULL } } ---------- Self circular dependency: ORIGINAL: object(SomethingBuilder)#3 (2) { ["name":"SomethingBuilder":private]=> string(1) "A" ["super":"SomethingBuilder":private]=> *RECURSION* } COPY: object(SomethingBuilder)#1 (2) { ["name":"SomethingBuilder":private]=> string(1) "A" ["super":"SomethingBuilder":private]=> *RECURSION* } ---------- Two items circular dependency: ORIGINAL: object(SomethingBuilder)#4 (2) { ["name":"SomethingBuilder":private]=> string(1) "A" ["super":"SomethingBuilder":private]=> object(SomethingBuilder)#5 (2) { ["name":"SomethingBuilder":private]=> string(1) "B" ["super":"SomethingBuilder":private]=> *RECURSION* } } COPY: object(SomethingBuilder)#2 (2) { ["name":"SomethingBuilder":private]=> string(1) "A" ["super":"SomethingBuilder":private]=> object(SomethingBuilder)#6 (2) { ["name":"SomethingBuilder":private]=> string(1) "B" ["super":"SomethingBuilder":private]=> *RECURSION* } } ---------- Three items circular dependency: ORIGINAL: object(SomethingBuilder)#7 (2) { ["name":"SomethingBuilder":private]=> string(1) "A" ["super":"SomethingBuilder":private]=> object(SomethingBuilder)#9 (2) { ["name":"SomethingBuilder":private]=> string(1) "C" ["super":"SomethingBuilder":private]=> object(SomethingBuilder)#8 (2) { ["name":"SomethingBuilder":private]=> string(1) "B" ["super":"SomethingBuilder":private]=> *RECURSION* } } } COPY: object(SomethingBuilder)#10 (2) { ["name":"SomethingBuilder":private]=> string(1) "A" ["super":"SomethingBuilder":private]=> object(SomethingBuilder)#11 (2) { ["name":"SomethingBuilder":private]=> string(1) "C" ["super":"SomethingBuilder":private]=> object(SomethingBuilder)#12 (2) { ["name":"SomethingBuilder":private]=> string(1) "B" ["super":"SomethingBuilder":private]=> *RECURSION* } } }
Output for 5.3.17 - 5.6.28: Parse error: syntax error, unexpected '?' in /in/fNHMA on line 25
Process exited with code 255.