3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Point { public function __construct(private int $x, private int $y) {} protected function modClone(...$args): static { $new = clone($this); foreach ($args as $k => $v) { $new->$k = $v; } return $new; } public function moveUp(int $amt) { return $this->modClone(y: $this->y + $amt); } } $p1 = new Point(3, 5); $p2 = $p1->moveUp(4); var_dump($p2);
Output for 8.1.23 - 8.1.33, 8.2.10 - 8.2.29, 8.3.0 - 8.3.27, 8.4.1 - 8.4.14
object(Point)#2 (2) { ["x":"Point":private]=> int(3) ["y":"Point":private]=> int(9) }
Output for 7.2.0 - 7.2.34, 7.3.0 - 7.3.23, 7.4.0 - 7.4.11
Parse error: syntax error, unexpected 'private' (T_PRIVATE), expecting variable (T_VARIABLE) in /in/lg4Ac on line 4
Process exited with code 255.
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137.16 ms | 407 KiB | 5 Q