3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Foo { public readonly int $bar; public function __set($name, $value) { echo "__set($name, $value)\n"; } public function unsetBar() { unset($this->bar); } } $foo = new Foo(); try { $foo->bar = 42; } catch (Throwable $e) { echo $e->getMessage(), "\n"; } $foo->unsetBar(); $foo->bar = 42;
Output for 8.1.0 - 8.1.12
Cannot initialize readonly property Foo::$bar from global scope __set(bar, 42)
Output for 8.0.1 - 8.0.25
Parse error: syntax error, unexpected identifier "int", expecting variable in /in/X76pV on line 4
Process exited with code 255.
Output for 7.4.0 - 7.4.33
Parse error: syntax error, unexpected 'int' (T_STRING), expecting variable (T_VARIABLE) in /in/X76pV on line 4
Process exited with code 255.
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