3v4l.org

run code in 500+ PHP versions simultaneously
<?php class a {function c(int $a = null) {} } class b extends a {function c(?int $a = null) {} } class d extends b {function c(int $a = null) {} }
Output for 8.1.0 - 8.1.34, 8.2.0 - 8.2.34, 8.3.0 - 8.3.35
Output for 8.4.1 - 8.4.26, 8.5.0 - 8.5.11
Deprecated: a::c(): Implicitly marking parameter $a as nullable is deprecated, the explicit nullable type must be used instead in /in/5vo1U on line 3 Deprecated: d::c(): Implicitly marking parameter $a as nullable is deprecated, the explicit nullable type must be used instead in /in/5vo1U on line 5
preferences:
31.08 ms | 1155 KiB | 9 Q