I have this array:
Array
(
[1] => Array
(
[0] => 5
[1] => 15
)
[3] => Array
(
[0] => 394
[1] => 398
)
[241] => Array
(
[0] => 35145
)
)
and I need to generate a new array that contains 1 value from every subarray, but not more than 1 value from each subarray.
It might be easier to explain visually, the below array is what the outcome should become:
Array
(
[0] => Array
(
[0] => 5
[1] => 394
[2] => 35145
)
[1] => Array
(
[0] => 5
[1] => 398
[2] => 35145
)
[2] => Array
(
[0] => 15
[1] => 394
[2] => 35145
)
[3] => Array
(
[0] => 15
[1] => 398
[2] => 35145
)
)
This is what I have so far:
$d = [];
$i = 0;
foreach($c as $id_feature => $x) {
foreach($x as $id_feature_value) {
$d[$i][] = $id_feature_value;
foreach($c as $id_feature2 => $x2) {
if($id_feature === $id_feature2) {
continue;
}
$d[$i][] = $x2[0];
}
sort($d[$i]);
$i++;
}
}
#check if only 1 feature is selected
if(empty($d)) {
$d[0][] = $this->selected_features[0];
} else {
$d = array_map("unserialize", array_unique(array_map("serialize", $d)));
}
Which generates: Array ( [0] => Array ( [0] => 5 [1] => 394 [2] => 35145 )
[1] => Array
(
[0] => 15
[1] => 394
[2] => 35145
)
[3] => Array
(
[0] => 5
[1] => 398
[2] => 35145
)
)
Would like to note that there being 3 subarrays isn't guaranteed, there could be more or less.
