I'm currently trying to get all values with a certain key from a multidimensional array with varying depth.
Sadly I'm not really good at dealing with recursion, so I don't really know how to solve this problem on my own. Here's a sample array:
Array
(
[id] => 243
[children] => Array
(
[0] => Array
(
[id] => 244
[children] => Array
(
[0] => Array
(
[id] => 245
)
[1] => Array
(
[id] => 246
)
)
)
[1] => Array
(
[id] => 249
[children] => Array
(
[0] => Array
(
[id] => 250
)
)
)
[2] => Array
(
[id] => 253
[children] => Array
(
[0] => Array
(
[id] => 256
[children] => Array
(
[0] => Array
(
[id] => 257
)
)
)
)
)
)
)
I basically just need a simple array with all the ID's from the multidimensional array. In this case the needed result would be:
Array
(
[0] => 243
[1] => 244
[2] => 245
[3] => 246
[4] => 249
[5] => 250
[6] => 253
[7] => 256
[8] => 257
)
I hope somebody can help here.
Remember this forever, keys/indexes must be unique and will be unique always.
Further, you can use array_walk_recursive to fetch ids from recursive array.
array_walk_recursive($arr, function($v,$k) use(&$result){
if($k == 'id') $result[] = $v;
});
array_walk_recursive — Apply a user function recursively to every member of an array
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