PHP to split array of objects with title in array

Question

I have an array of objects like below:

[
    {
        "TYPE": "food",
        "NAME": "abc"
    },
    {
        "TYPE": "fruit",
        "NAME": "xyz"
    },
    {
        "TYPE": "food",
        "NAME": "def"
    },
    {
        "TYPE": "food",
        "NAME": "ghi"
    },
]

How can I split this array of objects into multiple arrays such that the desired output looks like:

[
    {
        "TYPE": "food",
        "ITEMS": 
        [
            {
                "TYPE": "food",
                "NAME": "abc"
            },
            {
                "TYPE": "food",
                "NAME": "def"
            },
            {
                "TYPE": "food",
                "NAME": "ghi"
            },
        ]
    },
    {
        "TYPE": "fruit",
        "ITEMS": 
        [
            {
                "TYPE": "fruit",
                "NAME": "xyz"
            },
        ]
    },
]

Note that the parent object has its own identifier (TYPE)

I tried this:

    $result = [];
    foreach ($DT_DATA as $key => $value) {
        $group = $value->TYPE;
        if (!isset($result[$group])) {
            $result[$group] = [];
        }

        $result[$group][] = $value;
    }
    $result = array_values($result);

But the parent group does not contain "TYPE" and also "ITEMS" array

u_mulder · Accepted Answer · 2020-02-25 07:24:57Z

2

Some improvements that will do the job:

$result = [];
foreach ($DT_DATA as $key => $value) {
    $group = $value->TYPE;
    if (!isset($result[$group])) {
        // init with array of required structure
        $result[$group] = [
            'TYPE' => $group,
            'ITEMS' => [],
        ];
    }

    // add $value to `ITEMS` subarray
    $result[$group]['ITEMS'][] = $value;
}
$result = array_values($result);

answered Feb 25, 2020 at 7:24

u_mulder

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2 Comments

NewbieCoder Over a year ago

Any idea how I can split into a third level with a different key? say, the third key 'COLOR'. Meaning it would be TYPE > COLOR > {TYPE: "FRUIT", NAME: "xyz", COLOR: "RED"}

u_mulder Over a year ago

Add to ITEMS under key COLOR? But it's better to ask new question with related data provided.

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