3v4l.org

run code in 300+ PHP versions simultaneously
<?php class A { public function __construct( public int $a = 1 ) {} } class B extends A { public function __construct( public string $b = 'hello' ) {} } $b = new B(); $b=1; var_dump($b->a, $b->b);
Output for 8.1.23 - 8.1.31, 8.2.10 - 8.2.27, 8.3.0 - 8.3.15, 8.4.1 - 8.4.2
Warning: Attempt to read property "a" on int in /in/qKUlV on line 17 Warning: Attempt to read property "b" on int in /in/qKUlV on line 17 NULL NULL
Output for 7.2.0 - 7.2.32, 7.3.0 - 7.3.20, 7.4.0 - 7.4.8
Parse error: syntax error, unexpected 'public' (T_PUBLIC), expecting variable (T_VARIABLE) in /in/qKUlV on line 5
Process exited with code 255.
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