3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Super { public $child; function setChild(Child $child){ echo "setting child to super\n"; $this->child = $child; $child->setSuper($this); } function getChild(){ return $this->child; } } class Child { public $super; function setSuper(Super $super){ echo "setting super to child\n"; $this->super = $super; $this->super->setChild($this); } function getSuper(){ return $this->super; } } $super = new Super; $child = new Child; $super->setChild($child); var_dump($super); $super = new Super; $child = new Child; $child->setSuper($super); var_dump($super);
Output for 5.4.39 - 5.4.45, 5.5.23 - 5.5.38, 5.6.6 - 5.6.38, 7.0.0 - 7.0.31, 7.1.0 - 7.1.22, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.3 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.7
setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to super setting super to child setting child to
Process exited with code 137.
preferences:
429.54 ms | 440 KiB | 262 Q