@ 2015-12-14T14:08:59Z <?php
class Item
{
public $name;
public $parent;
public function __construct($name, $parent = null)
{
$this->name = $name;
$this->parent = $parent;
}
}
function render(Item $item)
{
yield $item;
if (is_object($item) && $item->parent) {
yield from render($item->parent);
}
}
$a = new Item('a');
$b = new Item('b', $a);
$c = new Item('c', $b);
$d = new Item('d', $c);
$e = new Item('e', $d);
foreach (render($e) as $item) {
var_dump($item);
}
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Output for 7.0.0 - 7.0.20 , 7.1.0 - 7.1.20 , 7.2.0 - 7.2.33 , 7.3.16 - 7.3.33 , 7.4.0 - 7.4.33 , 8.0.0 - 8.0.30 , 8.1.0 - 8.1.28 , 8.2.0 - 8.2.18 , 8.3.0 - 8.3.6 object(Item)#5 (2) {
["name"]=>
string(1) "e"
["parent"]=>
object(Item)#4 (2) {
["name"]=>
string(1) "d"
["parent"]=>
object(Item)#3 (2) {
["name"]=>
string(1) "c"
["parent"]=>
object(Item)#2 (2) {
["name"]=>
string(1) "b"
["parent"]=>
object(Item)#1 (2) {
["name"]=>
string(1) "a"
["parent"]=>
NULL
}
}
}
}
}
object(Item)#4 (2) {
["name"]=>
string(1) "d"
["parent"]=>
object(Item)#3 (2) {
["name"]=>
string(1) "c"
["parent"]=>
object(Item)#2 (2) {
["name"]=>
string(1) "b"
["parent"]=>
object(Item)#1 (2) {
["name"]=>
string(1) "a"
["parent"]=>
NULL
}
}
}
}
object(Item)#3 (2) {
["name"]=>
string(1) "c"
["parent"]=>
object(Item)#2 (2) {
["name"]=>
string(1) "b"
["parent"]=>
object(Item)#1 (2) {
["name"]=>
string(1) "a"
["parent"]=>
NULL
}
}
}
object(Item)#2 (2) {
["name"]=>
string(1) "b"
["parent"]=>
object(Item)#1 (2) {
["name"]=>
string(1) "a"
["parent"]=>
NULL
}
}
object(Item)#1 (2) {
["name"]=>
string(1) "a"
["parent"]=>
NULL
}
Output for 5.5.24 - 5.5.35 , 5.6.8 - 5.6.28 Parse error: syntax error, unexpected 'render' (T_STRING) in /in/MlYOb on line 21
Process exited with code 255 . preferences:dark mode live preview
149.07 ms | 402 KiB | 184 Q