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run code in 300+ PHP versions simultaneously
<?php class Test { private $x; private $y; private $z; public function __constructor() { $this->x = 100; $this->y = 20; $this->z = 30; } public function _get($k) { echo $this->x; return $this->$k; } } $t = new Test(); echo $t->x . PHP_EOL;
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Fatal error: Uncaught Error: Cannot access private property Test::$x in /in/RaL93:24 Stack trace: #0 {main} thrown in /in/RaL93 on line 24
Process exited with code 255.
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28
Fatal error: Cannot access private property Test::$x in /in/RaL93 on line 24
Process exited with code 255.

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