PHP producing a multidimensional associative array in desired format - php

Question

I am trying to wrangle data into a desired format. Basically, I have a list in which a subset of the entities can have multiple values and need to be grouped and iterated over within the list.
Given the following example:
$entities = [
0 => ['name' => 'a', 'type' => 'single'],
1 => ['name' => 'b', 'type' => 'single'],
2 => ['name' => 'c', 'type' => 'grouped'],
3 => ['name' => 'd', 'type' => 'grouped'],
4 => ['name' => 'e', 'type' => 'single'],
];
foreach ($entities as $entityKey => $entity) {
if ($entity['type'] == 'single') {
$array[] = ['name' => $entity['name']];
}
if ($entity['type'] == 'grouped') {
// arbitrary number of items
$items = [0 => 'apple', 1 => 'orange', 2 => 'banana'];
foreach ($items as $itemKey => $item) {
$array[] = ['name' => $entity['name']];
}
}
}
print_r($array);
How can I produce output: a, b, c, d, c, d, c, d, e, such that the entities of type 'grouped' are paired and iterated over before he next entity is inserted into the array. Specifically:
Array
(
[0] => Array
(
[name] => a
)
[1] => Array
(
[name] => b
)
[2] => Array
(
[name] => c
)
[3] => Array
(
[name] => d
)
[4] => Array
(
[name] => c
)
[5] => Array
(
[name] => d
)
[6] => Array
(
[name] => c
)
[7] => Array
(
[name] => d
)
[8] => Array
(
[name] => e
)
)

Answer 1

here is a working solution for you.
$entities = [
0 => ['name' => 'a', 'type' => 'single'],
1 => ['name' => 'b', 'type' => 'single'],
2 => ['name' => 'c', 'type' => 'grouped'],
3 => ['name' => 'd', 'type' => 'grouped'],
4 => ['name' => 'e', 'type' => 'single'],
];
$grouped = [];
foreach($entities as $entity){
if($entity['type'] == 'grouped'){
$grouped[] = $entity['name'];
}
}
$f = 0;
foreach ($entities as $entity) {
if ($entity['type'] == 'single') {
$array[] = ['name' => $entity['name']];
}
if ($entity['type'] == 'grouped') {
$items = [0 => 'apple', 1 => 'orange', 2 => 'banana'];
for($i = 0; $i < count($items); $i++) {
foreach($grouped as $grouped_item){
if($f < count($items)*2){
$array[] = ['name' => $grouped_item];
}
$f++;
}
}
}
}
print_r($array);