3v4l.org

run code in 500+ PHP versions simultaneously
<?php class A { public function get(): iterable { return [17]; } } class B extends A { public function get(): iterable { yield 42; } } echo (new A)->get()[0]; echo (new B)->get()[0];
Output for 8.1.32 - 8.1.34, 8.2.0 - 8.2.32, 8.3.0 - 8.3.32, 8.4.1 - 8.4.23, 8.5.0 - 8.5.8
17 Fatal error: Uncaught Error: Cannot use object of type Generator as array in /in/l9NY2:15 Stack trace: #0 {main} thrown in /in/l9NY2 on line 15
Process exited with code 255.
preferences:
59.88 ms | 900 KiB | 4 Q