Search on my multidimensional array list - php

Question

I have this array:
Array
(
[8008] => Array
(
[main_mob_vnum] => 8008
[0] => Array
(
[drop_mob_vnum] => 50300
[drop_mob_count] => 2
[drop_mob_percent] => 110.00
)
[1] => Array
(
[drop_mob_vnum] => 39030
[drop_mob_count] => 2
[drop_mob_percent] => 85.00
)
)
[8009] => Array
(
[main_mob_vnum] => 8009
[0] => Array
(
[drop_mob_vnum] => 50300
[drop_mob_count] => 4
[drop_mob_percent] => 110.00
)
[1] => Array
(
[drop_mob_vnum] => 50125
[drop_mob_count] => 1
[drop_mob_percent] => 75.00
)
)
[8010] => Array
(
[main_mob_vnum] => 8009
[0] => Array
(
[drop_mob_vnum] => 50125
[drop_mob_count] => 4
[drop_mob_percent] => 110.00
)
)
)
I want to make a function like
function searchArray($array,$vnum)
if $vnum is == with drop_mob_vnum take the previously array and put all this array keys on new array
For example, searchArray($array,50300) should return an array like: array(8008,8009) because 8010 doesn't have a drop_mob_vnum == 50300
I know StackOverflow requires that I post my problem with code, but I don't know where to start. If someone could help me, I would appreciate it. Thank you!

Answer 1

This function should do the trick:
function find_vnum($array,$value)
{
$result = array();
foreach ($array AS $k1 => $v1)
{
foreach ($v1 AS $k2 => $v2)
{
if ($k2 === 'main_mob_vnum') {
continue;
}
foreach ($v2 AS $k3 => $v3)
{
if ($k3 !== 'drop_mob_vnum') {
continue;
}
if (($v3 === $value) && !in_array($k1, $result)) {
$result[] = $k1;
}
}
}
}
return $result;
}
Given your sample data:
print_r(find_vnum($data,50300));
// Array
// (
// [0] => 8008
// [1] => 8009
// )
You can see a working demo here.