Online PHP editor | output for bM2Eg

<?php class NumberContainer { public int $sum { get => $this->prop1 + $this->prop2 + $this->prop3; } public function __construct( public int $prop1 { set(int $value) { if (isset($this->prop2) && isset($this->prop3) && $value + $this->prop2 + $this->prop3 !== 100) { throw new \InvalidArgumentException("Setting prop1 to {$value} would make the sum be not equals 100."); } $this->prop1 = $value; } }, public int $prop2 { set(int $value) { if (isset($this->prop1) && isset($this->prop3) && $this->prop1 + $value + $this->prop3 !== 100) { throw new \InvalidArgumentException("Setting prop2 to {$value} would make the sum be not equals 100."); } $this->prop2 = $value; } }, public int $prop3 { set(int $value) { if (isset($this->prop1) && isset($this->prop2) && $this->prop1 + $this->prop2 + $value !== 100) { throw new \InvalidArgumentException("Setting prop3 to {$value} would make the sum be not equals 100."); } $this->prop3 = $value; } }, ) {} } echo "Instanciate with 30, 50, 20" . PHP_EOL; $container = new NumberContainer(30, 50, 20); try { echo "Setting prop2 to 666" . PHP_EOL; $container->prop2 = 666; } catch (InvalidArgumentException $e) { echo $e->getMessage() . PHP_EOL; } try { echo "Setting prop3 to 12". PHP_EOL; $container->prop2 = 12; } catch (InvalidArgumentException $e) { echo $e->getMessage() . PHP_EOL; } try { echo "Instanciate with 1337, 42, 3886" . PHP_EOL; $container = new NumberContainer(1337, 42, 3886); } catch (InvalidArgumentException $e) { echo $e->getMessage() . PHP_EOL; }