<?php
$arr = array (
0 => 'nested array',
1 => 'nested array',
2 => 'nested array',
3 => 'nested array',
4 => 'nested array',
5 => 'nested array',
);
var_dump(key(array_diff(array_keys(array_values($arr)), array_keys($arr))));
- Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.4, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.6 - 7.2.33, 7.3.12 - 7.3.33, 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
- NULL
- Output for 5.0.5
- Fatal error: Only variables can be passed by reference in /in/Tm7Ua on line 12
Process exited with code 255.
preferences:
210.13 ms | 401 KiB | 313 Q