3v4l.org

run code in 300+ PHP versions simultaneously
<?php declare(strict_types=1); function foo(int $x, int $y = 2, ?int &$z) { var_dump(func_num_args()); $z = $x ** 2; return $x * $y; } var_dump([foo(5, z: $a), $a]); var_dump([foo(3, -1)]);
Output for 8.4.1 - 8.4.12
Deprecated: foo(): Optional parameter $y declared before required parameter $z is implicitly treated as a required parameter in /in/VuWZC on line 5 Fatal error: Uncaught ArgumentCountError: foo(): Argument #2 ($y) not passed in /in/VuWZC:5 Stack trace: #0 /in/VuWZC(11): foo(5, NULL, NULL) #1 {main} thrown in /in/VuWZC on line 5
Process exited with code 255.
Output for 8.2.0 - 8.2.29, 8.3.0 - 8.3.25
Deprecated: Optional parameter $y declared before required parameter $z is implicitly treated as a required parameter in /in/VuWZC on line 5 Fatal error: Uncaught ArgumentCountError: foo(): Argument #2 ($y) not passed in /in/VuWZC:5 Stack trace: #0 /in/VuWZC(11): foo(5, NULL, NULL) #1 {main} thrown in /in/VuWZC on line 5
Process exited with code 255.
preferences:
42.7 ms | 408 KiB | 5 Q