3v4l.org

run code in 500+ PHP versions simultaneously
<?php function (int $a = null, $b) {}; function (?int $a = null, $b) {};
Output for 8.1.0 - 8.1.34, 8.2.0 - 8.2.34, 8.3.0 - 8.3.35
Deprecated: Optional parameter $a declared before required parameter $b is implicitly treated as a required parameter in /in/nSpos on line 5
Output for 8.4.1 - 8.4.26, 8.5.0 - 8.5.11
Deprecated: {closure:/in/nSpos:3}(): Implicitly marking parameter $a as nullable is deprecated, the explicit nullable type must be used instead in /in/nSpos on line 3 Deprecated: {closure:/in/nSpos:5}(): Optional parameter $a declared before required parameter $b is implicitly treated as a required parameter in /in/nSpos on line 5

preferences:
27.22 ms | 1140 KiB | 9 Q