3v4l.org

run code in 500+ PHP versions simultaneously
<?php class A { public function __construct( public $a = 1 ) {} } class B extends A { public function __construct( public string $b = 'hello' ) {} } $b = new B(); var_dump($b->a, $b->b);
Output for 8.1.23 - 8.1.34, 8.2.0 - 8.2.34, 8.3.0 - 8.3.35, 8.4.1 - 8.4.26, 8.5.0 - 8.5.11
NULL string(5) "hello"
Output for 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.8
Parse error: syntax error, unexpected 'public' (T_PUBLIC), expecting variable (T_VARIABLE) in /in/SKTie on line 5
Process exited with code 255.
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34.38 ms | 1140 KiB | 9 Q