<?php
$arr = array();
$a = [0,1,2,3,4,5];
$b = [0,1,2,3,4,5];
$c = [0,1,2,3,4,5];
$d = [0,1,2,3,4,5];
$e = [0,1,2,3,4,5];
$f = [0,1,2,3,4,5];
$g = [0,1,2,3,4,5];
$arr[] = $a;
$arr[] = $b;
$arr[] = $c;
$arr[0][2] = $d;
$arr[0][2][3] = $e;
$arr[2][1] = $f;
$arr[1] = $g;
print_r($arr);
function array_keys_recur($myArray, $MAXDEPTH = INF, $depth = 0, $arrayKeys = array()){
if($depth < $MAXDEPTH){
$depth++;
$keys = array_keys($myArray);
foreach($keys as $key){
if(is_array($myArray[$key])){
$arrayKeys[$key] = array_keys_recursive($myArray[$key], $MAXDEPTH, $depth);
}
}
}
return $arrayKeys;
}
$keys = array_keys_recur($arr);
print_r($keys);
- Output for 7.0.0 - 7.0.33, 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 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
- Array
(
[0] => Array
(
[0] => 0
[1] => 1
[2] => Array
(
[0] => 0
[1] => 1
[2] => 2
[3] => Array
(
[0] => 0
[1] => 1
[2] => 2
[3] => 3
[4] => 4
[5] => 5
)
[4] => 4
[5] => 5
)
[3] => 3
[4] => 4
[5] => 5
)
[1] => Array
(
[0] => 0
[1] => 1
[2] => 2
[3] => 3
[4] => 4
[5] => 5
)
[2] => Array
(
[0] => 0
[1] => Array
(
[0] => 0
[1] => 1
[2] => 2
[3] => 3
[4] => 4
[5] => 5
)
[2] => 2
[3] => 3
[4] => 4
[5] => 5
)
)
Fatal error: Uncaught Error: Call to undefined function array_keys_recursive() in /in/u2JPj:27
Stack trace:
#0 /in/u2JPj(35): array_keys_recur(Array)
#1 {main}
thrown in /in/u2JPj on line 27
Process exited with code 255. - 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] => Array
(
[0] => 0
[1] => 1
[2] => Array
(
[0] => 0
[1] => 1
[2] => 2
[3] => Array
(
[0] => 0
[1] => 1
[2] => 2
[3] => 3
[4] => 4
[5] => 5
)
[4] => 4
[5] => 5
)
[3] => 3
[4] => 4
[5] => 5
)
[1] => Array
(
[0] => 0
[1] => 1
[2] => 2
[3] => 3
[4] => 4
[5] => 5
)
[2] => Array
(
[0] => 0
[1] => Array
(
[0] => 0
[1] => 1
[2] => 2
[3] => 3
[4] => 4
[5] => 5
)
[2] => 2
[3] => 3
[4] => 4
[5] => 5
)
)
Fatal error: Uncaught Error: Call to undefined function array_keys_recursive() in /in/u2JPj:27
Stack trace:
#0 /in/u2JPj(35): array_keys_recur(Array)
#1 {main}
thrown in /in/u2JPj on line 27
Process exited with code 255. - Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.38
- Array
(
[0] => Array
(
[0] => 0
[1] => 1
[2] => Array
(
[0] => 0
[1] => 1
[2] => 2
[3] => Array
(
[0] => 0
[1] => 1
[2] => 2
[3] => 3
[4] => 4
[5] => 5
)
[4] => 4
[5] => 5
)
[3] => 3
[4] => 4
[5] => 5
)
[1] => Array
(
[0] => 0
[1] => 1
[2] => 2
[3] => 3
[4] => 4
[5] => 5
)
[2] => Array
(
[0] => 0
[1] => Array
(
[0] => 0
[1] => 1
[2] => 2
[3] => 3
[4] => 4
[5] => 5
)
[2] => 2
[3] => 3
[4] => 4
[5] => 5
)
)
Fatal error: Call to undefined function array_keys_recursive() in /in/u2JPj on line 27
Process exited with code 255.
preferences:
241.92 ms | 403 KiB | 371 Q