3v4l.org

run code in 500+ PHP versions simultaneously
<?php var_dump(null == false); print_r([null => 1, false => 1, ]); ?>
Output for 8.5.0 - 8.5.7
bool(true) Deprecated: Using null as an array offset is deprecated, use an empty string instead in /in/av7e9 on line 5 Array ( [] => 1 [0] => 1 )
Output for 8.1.32 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18
bool(true) Array ( [] => 1 [0] => 1 )
preferences:
60.38 ms | 854 KiB | 4 Q