PHP Multi-Dimensional array search (with array_search) - php

Question

I am aware of this question, but I have an additional one to search for an array-key. Take a look at this:
array(2) {
[0]=>
array(2) {
["name"]=>
string(6) "Text 1"
["types"]=>
array(3) {
[0]=>
string(7) "Level 1"
[1]=>
string(14) "something else"
[2]=>
string(15) "whatisearchfor1"
}
}
[1]=>
array(2) {
["name"]=>
string(6) "Text 2"
["types"]=>
array(3) {
[0]=>
string(7) "Level 2"
[1]=>
string(14) "something else"
[2]=>
string(15) "whatisearchfor2"
}
}
}
This snippet...
echo array_search("Text 2", array_column($response, "name"));
...gives me a 1 for the second array-key, in which the term was found.
But how do I receive the global array-key (0 or 1), if I search for whatisearchfor2, which is stored in the multi-array "types"?
echo array_search("whatisearchfor2", array_column($response, "types"));
...doesn't work.

Answer 1

In your case array_column($response, "types") will return an array of arrays. But to get "global array-key (0 or 1), if you search for whatisearchfor2" use the following approach with array_walk:
$key = null; // will contain the needed 'global array-key' if a search was successful
$needle = "whatisearchfor2"; // searched word
// assuming that $arr is your initial array
array_walk($arr, function ($v,$k) use(&$key, $needle){
if (in_array($needle, $v['types'])){
$key = $k;
}
});
var_dump($key); // outputs: int(1)