@ 2015-04-15T15:35:42Z <?php
$array = [
1 => [
1 => [
'anna',
'alice'
],
2 => [
'bob',
'bartold'
]
],
2 => [
1 => [
'carol'
],
2 => [
'david'
]
]
];
$result = [];
$prevKey = 0;
array_walk_recursive($array, function ($value, $key) use (&$result, &$prevKey) {
if (!is_array($value)) {
}else {
$prevKey = $key;
echo $key;
}
});
var_dump($result);
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Output for 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 , 7.2.0 - 7.2.33 , 7.3.16 - 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 - 8.3.4 , 8.3.6 array(0) {
}
Output for 8.3.5 Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0
array(0) {
}
Output for 4.4.2 - 4.4.9 , 5.1.0 - 5.1.6 , 5.2.0 - 5.2.17 , 5.3.0 - 5.3.29 Parse error: syntax error, unexpected '[' in /in/2WEpY on line 3
Process exited with code 255 . Output for 4.3.0 - 4.3.1 , 4.3.5 - 4.3.11 , 4.4.0 - 4.4.1 , 5.0.0 - 5.0.5 Parse error: parse error, unexpected '[' in /in/2WEpY on line 3
Process exited with code 255 . Output for 4.3.2 - 4.3.4 Parse error: parse error in /in/2WEpY on line 3
Process exited with code 255 . preferences:dark mode live preview
206.4 ms | 401 KiB | 313 Q