3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump(key(array_slice([1,2,3], 1, 1, true))); var_dump(end(array_slice([1,2,3], 1, 1, true)));
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.31, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
int(1) Notice: Only variables should be passed by reference in /in/b31gp on line 3 int(2)
Output for 7.3.32 - 7.3.33
int(1) int(2)
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.30
int(1) Strict Standards: Only variables should be passed by reference in /in/b31gp on line 3 int(2)

preferences:
224.21 ms | 402 KiB | 287 Q