- Output for 5.6.0 - 5.6.23, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
- Array ( [1] => Array ( [0] => 2 [1] => 3 ) )
<?php
// No initialisation of $optionsbyuser or sub-arrays!
$optionsbyuser[1][] = 2;
$optionsbyuser[1][] = 3;
print_r($optionsbyuser);